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Case Study – Methods, Examples and Guide

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A case study is a research method that involves an in-depth examination and analysis of a particular phenomenon or case, such as an individual, organization, community, event, or situation.

It is a qualitative research approach that aims to provide a detailed and comprehensive understanding of the case being studied. Case studies typically involve multiple sources of data, including interviews, observations, documents, and artifacts, which are analyzed using various techniques, such as content analysis, thematic analysis, and grounded theory. The findings of a case study are often used to develop theories, inform policy or practice, or generate new research questions.

Types of Case Study

Types and Methods of Case Study are as follows:

Single-Case Study

A single-case study is an in-depth analysis of a single case. This type of case study is useful when the researcher wants to understand a specific phenomenon in detail.

For Example , A researcher might conduct a single-case study on a particular individual to understand their experiences with a particular health condition or a specific organization to explore their management practices. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a single-case study are often used to generate new research questions, develop theories, or inform policy or practice.

Multiple-Case Study

A multiple-case study involves the analysis of several cases that are similar in nature. This type of case study is useful when the researcher wants to identify similarities and differences between the cases.

For Example, a researcher might conduct a multiple-case study on several companies to explore the factors that contribute to their success or failure. The researcher collects data from each case, compares and contrasts the findings, and uses various techniques to analyze the data, such as comparative analysis or pattern-matching. The findings of a multiple-case study can be used to develop theories, inform policy or practice, or generate new research questions.

Exploratory Case Study

An exploratory case study is used to explore a new or understudied phenomenon. This type of case study is useful when the researcher wants to generate hypotheses or theories about the phenomenon.

For Example, a researcher might conduct an exploratory case study on a new technology to understand its potential impact on society. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as grounded theory or content analysis. The findings of an exploratory case study can be used to generate new research questions, develop theories, or inform policy or practice.

Descriptive Case Study

A descriptive case study is used to describe a particular phenomenon in detail. This type of case study is useful when the researcher wants to provide a comprehensive account of the phenomenon.

For Example, a researcher might conduct a descriptive case study on a particular community to understand its social and economic characteristics. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a descriptive case study can be used to inform policy or practice or generate new research questions.

Instrumental Case Study

An instrumental case study is used to understand a particular phenomenon that is instrumental in achieving a particular goal. This type of case study is useful when the researcher wants to understand the role of the phenomenon in achieving the goal.

For Example, a researcher might conduct an instrumental case study on a particular policy to understand its impact on achieving a particular goal, such as reducing poverty. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of an instrumental case study can be used to inform policy or practice or generate new research questions.

Case Study Data Collection Methods

Here are some common data collection methods for case studies:

Interviews involve asking questions to individuals who have knowledge or experience relevant to the case study. Interviews can be structured (where the same questions are asked to all participants) or unstructured (where the interviewer follows up on the responses with further questions). Interviews can be conducted in person, over the phone, or through video conferencing.

Observations

Observations involve watching and recording the behavior and activities of individuals or groups relevant to the case study. Observations can be participant (where the researcher actively participates in the activities) or non-participant (where the researcher observes from a distance). Observations can be recorded using notes, audio or video recordings, or photographs.

Documents can be used as a source of information for case studies. Documents can include reports, memos, emails, letters, and other written materials related to the case study. Documents can be collected from the case study participants or from public sources.

Surveys involve asking a set of questions to a sample of individuals relevant to the case study. Surveys can be administered in person, over the phone, through mail or email, or online. Surveys can be used to gather information on attitudes, opinions, or behaviors related to the case study.

Artifacts are physical objects relevant to the case study. Artifacts can include tools, equipment, products, or other objects that provide insights into the case study phenomenon.

How to conduct Case Study Research

Conducting a case study research involves several steps that need to be followed to ensure the quality and rigor of the study. Here are the steps to conduct case study research:

• Define the research questions: The first step in conducting a case study research is to define the research questions. The research questions should be specific, measurable, and relevant to the case study phenomenon under investigation.
• Select the case: The next step is to select the case or cases to be studied. The case should be relevant to the research questions and should provide rich and diverse data that can be used to answer the research questions.
• Collect data: Data can be collected using various methods, such as interviews, observations, documents, surveys, and artifacts. The data collection method should be selected based on the research questions and the nature of the case study phenomenon.
• Analyze the data: The data collected from the case study should be analyzed using various techniques, such as content analysis, thematic analysis, or grounded theory. The analysis should be guided by the research questions and should aim to provide insights and conclusions relevant to the research questions.
• Draw conclusions: The conclusions drawn from the case study should be based on the data analysis and should be relevant to the research questions. The conclusions should be supported by evidence and should be clearly stated.
• Validate the findings: The findings of the case study should be validated by reviewing the data and the analysis with participants or other experts in the field. This helps to ensure the validity and reliability of the findings.
• Write the report: The final step is to write the report of the case study research. The report should provide a clear description of the case study phenomenon, the research questions, the data collection methods, the data analysis, the findings, and the conclusions. The report should be written in a clear and concise manner and should follow the guidelines for academic writing.

Examples of Case Study

Here are some examples of case study research:

• The Hawthorne Studies : Conducted between 1924 and 1932, the Hawthorne Studies were a series of case studies conducted by Elton Mayo and his colleagues to examine the impact of work environment on employee productivity. The studies were conducted at the Hawthorne Works plant of the Western Electric Company in Chicago and included interviews, observations, and experiments.
• The Stanford Prison Experiment: Conducted in 1971, the Stanford Prison Experiment was a case study conducted by Philip Zimbardo to examine the psychological effects of power and authority. The study involved simulating a prison environment and assigning participants to the role of guards or prisoners. The study was controversial due to the ethical issues it raised.
• The Challenger Disaster: The Challenger Disaster was a case study conducted to examine the causes of the Space Shuttle Challenger explosion in 1986. The study included interviews, observations, and analysis of data to identify the technical, organizational, and cultural factors that contributed to the disaster.
• The Enron Scandal: The Enron Scandal was a case study conducted to examine the causes of the Enron Corporation’s bankruptcy in 2001. The study included interviews, analysis of financial data, and review of documents to identify the accounting practices, corporate culture, and ethical issues that led to the company’s downfall.
• The Fukushima Nuclear Disaster : The Fukushima Nuclear Disaster was a case study conducted to examine the causes of the nuclear accident that occurred at the Fukushima Daiichi Nuclear Power Plant in Japan in 2011. The study included interviews, analysis of data, and review of documents to identify the technical, organizational, and cultural factors that contributed to the disaster.

Application of Case Study

Case studies have a wide range of applications across various fields and industries. Here are some examples:

Business and Management

Case studies are widely used in business and management to examine real-life situations and develop problem-solving skills. Case studies can help students and professionals to develop a deep understanding of business concepts, theories, and best practices.

Case studies are used in healthcare to examine patient care, treatment options, and outcomes. Case studies can help healthcare professionals to develop critical thinking skills, diagnose complex medical conditions, and develop effective treatment plans.

Case studies are used in education to examine teaching and learning practices. Case studies can help educators to develop effective teaching strategies, evaluate student progress, and identify areas for improvement.

Social Sciences

Case studies are widely used in social sciences to examine human behavior, social phenomena, and cultural practices. Case studies can help researchers to develop theories, test hypotheses, and gain insights into complex social issues.

Law and Ethics

Case studies are used in law and ethics to examine legal and ethical dilemmas. Case studies can help lawyers, policymakers, and ethical professionals to develop critical thinking skills, analyze complex cases, and make informed decisions.

Purpose of Case Study

The purpose of a case study is to provide a detailed analysis of a specific phenomenon, issue, or problem in its real-life context. A case study is a qualitative research method that involves the in-depth exploration and analysis of a particular case, which can be an individual, group, organization, event, or community.

The primary purpose of a case study is to generate a comprehensive and nuanced understanding of the case, including its history, context, and dynamics. Case studies can help researchers to identify and examine the underlying factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and detailed understanding of the case, which can inform future research, practice, or policy.

Case studies can also serve other purposes, including:

• Illustrating a theory or concept: Case studies can be used to illustrate and explain theoretical concepts and frameworks, providing concrete examples of how they can be applied in real-life situations.
• Developing hypotheses: Case studies can help to generate hypotheses about the causal relationships between different factors and outcomes, which can be tested through further research.
• Providing insight into complex issues: Case studies can provide insights into complex and multifaceted issues, which may be difficult to understand through other research methods.
• Informing practice or policy: Case studies can be used to inform practice or policy by identifying best practices, lessons learned, or areas for improvement.

Advantages of Case Study Research

There are several advantages of case study research, including:

• In-depth exploration: Case study research allows for a detailed exploration and analysis of a specific phenomenon, issue, or problem in its real-life context. This can provide a comprehensive understanding of the case and its dynamics, which may not be possible through other research methods.
• Rich data: Case study research can generate rich and detailed data, including qualitative data such as interviews, observations, and documents. This can provide a nuanced understanding of the case and its complexity.
• Holistic perspective: Case study research allows for a holistic perspective of the case, taking into account the various factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and comprehensive understanding of the case.
• Theory development: Case study research can help to develop and refine theories and concepts by providing empirical evidence and concrete examples of how they can be applied in real-life situations.
• Practical application: Case study research can inform practice or policy by identifying best practices, lessons learned, or areas for improvement.
• Contextualization: Case study research takes into account the specific context in which the case is situated, which can help to understand how the case is influenced by the social, cultural, and historical factors of its environment.

Limitations of Case Study Research

There are several limitations of case study research, including:

• Limited generalizability : Case studies are typically focused on a single case or a small number of cases, which limits the generalizability of the findings. The unique characteristics of the case may not be applicable to other contexts or populations, which may limit the external validity of the research.
• Biased sampling: Case studies may rely on purposive or convenience sampling, which can introduce bias into the sample selection process. This may limit the representativeness of the sample and the generalizability of the findings.
• Subjectivity: Case studies rely on the interpretation of the researcher, which can introduce subjectivity into the analysis. The researcher’s own biases, assumptions, and perspectives may influence the findings, which may limit the objectivity of the research.
• Limited control: Case studies are typically conducted in naturalistic settings, which limits the control that the researcher has over the environment and the variables being studied. This may limit the ability to establish causal relationships between variables.
• Time-consuming: Case studies can be time-consuming to conduct, as they typically involve a detailed exploration and analysis of a specific case. This may limit the feasibility of conducting multiple case studies or conducting case studies in a timely manner.
• Resource-intensive: Case studies may require significant resources, including time, funding, and expertise. This may limit the ability of researchers to conduct case studies in resource-constrained settings.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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The Ultimate Guide to Qualitative Research - Part 1: The Basics

• Introduction and overview
• What is qualitative research?
• What is qualitative data?
• Examples of qualitative data
• Qualitative vs. quantitative research
• Mixed methods
• Qualitative research preparation
• Theoretical perspective
• Theoretical framework
• Literature reviews

Research question

• Conceptual framework
• Conceptual vs. theoretical framework

Data collection

• Qualitative research methods
• Focus groups
• Observational research

What is a case study?

Applications for case study research, what is a good case study, process of case study design, benefits and limitations of case studies.

• Ethnographical research
• Ethical considerations
• Confidentiality and privacy
• Power dynamics
• Reflexivity

Case studies

Case studies are essential to qualitative research , offering a lens through which researchers can investigate complex phenomena within their real-life contexts. This chapter explores the concept, purpose, applications, examples, and types of case studies and provides guidance on how to conduct case study research effectively.

Whereas quantitative methods look at phenomena at scale, case study research looks at a concept or phenomenon in considerable detail. While analyzing a single case can help understand one perspective regarding the object of research inquiry, analyzing multiple cases can help obtain a more holistic sense of the topic or issue. Let's provide a basic definition of a case study, then explore its characteristics and role in the qualitative research process.

Definition of a case study

A case study in qualitative research is a strategy of inquiry that involves an in-depth investigation of a phenomenon within its real-world context. It provides researchers with the opportunity to acquire an in-depth understanding of intricate details that might not be as apparent or accessible through other methods of research. The specific case or cases being studied can be a single person, group, or organization – demarcating what constitutes a relevant case worth studying depends on the researcher and their research question .

Among qualitative research methods , a case study relies on multiple sources of evidence, such as documents, artifacts, interviews , or observations , to present a complete and nuanced understanding of the phenomenon under investigation. The objective is to illuminate the readers' understanding of the phenomenon beyond its abstract statistical or theoretical explanations.

Characteristics of case studies

Case studies typically possess a number of distinct characteristics that set them apart from other research methods. These characteristics include a focus on holistic description and explanation, flexibility in the design and data collection methods, reliance on multiple sources of evidence, and emphasis on the context in which the phenomenon occurs.

Furthermore, case studies can often involve a longitudinal examination of the case, meaning they study the case over a period of time. These characteristics allow case studies to yield comprehensive, in-depth, and richly contextualized insights about the phenomenon of interest.

The role of case studies in research

Case studies hold a unique position in the broader landscape of research methods aimed at theory development. They are instrumental when the primary research interest is to gain an intensive, detailed understanding of a phenomenon in its real-life context.

In addition, case studies can serve different purposes within research - they can be used for exploratory, descriptive, or explanatory purposes, depending on the research question and objectives. This flexibility and depth make case studies a valuable tool in the toolkit of qualitative researchers.

Remember, a well-conducted case study can offer a rich, insightful contribution to both academic and practical knowledge through theory development or theory verification, thus enhancing our understanding of complex phenomena in their real-world contexts.

What is the purpose of a case study?

Case study research aims for a more comprehensive understanding of phenomena, requiring various research methods to gather information for qualitative analysis . Ultimately, a case study can allow the researcher to gain insight into a particular object of inquiry and develop a theoretical framework relevant to the research inquiry.

Why use case studies in qualitative research?

Using case studies as a research strategy depends mainly on the nature of the research question and the researcher's access to the data.

Conducting case study research provides a level of detail and contextual richness that other research methods might not offer. They are beneficial when there's a need to understand complex social phenomena within their natural contexts.

The explanatory, exploratory, and descriptive roles of case studies

Case studies can take on various roles depending on the research objectives. They can be exploratory when the research aims to discover new phenomena or define new research questions; they are descriptive when the objective is to depict a phenomenon within its context in a detailed manner; and they can be explanatory if the goal is to understand specific relationships within the studied context. Thus, the versatility of case studies allows researchers to approach their topic from different angles, offering multiple ways to uncover and interpret the data .

The impact of case studies on knowledge development

Case studies play a significant role in knowledge development across various disciplines. Analysis of cases provides an avenue for researchers to explore phenomena within their context based on the collected data.

This can result in the production of rich, practical insights that can be instrumental in both theory-building and practice. Case studies allow researchers to delve into the intricacies and complexities of real-life situations, uncovering insights that might otherwise remain hidden.

Types of case studies

In qualitative research , a case study is not a one-size-fits-all approach. Depending on the nature of the research question and the specific objectives of the study, researchers might choose to use different types of case studies. These types differ in their focus, methodology, and the level of detail they provide about the phenomenon under investigation.

Understanding these types is crucial for selecting the most appropriate approach for your research project and effectively achieving your research goals. Let's briefly look at the main types of case studies.

Exploratory case studies

Exploratory case studies are typically conducted to develop a theory or framework around an understudied phenomenon. They can also serve as a precursor to a larger-scale research project. Exploratory case studies are useful when a researcher wants to identify the key issues or questions which can spur more extensive study or be used to develop propositions for further research. These case studies are characterized by flexibility, allowing researchers to explore various aspects of a phenomenon as they emerge, which can also form the foundation for subsequent studies.

Descriptive case studies

Descriptive case studies aim to provide a complete and accurate representation of a phenomenon or event within its context. These case studies are often based on an established theoretical framework, which guides how data is collected and analyzed. The researcher is concerned with describing the phenomenon in detail, as it occurs naturally, without trying to influence or manipulate it.

Explanatory case studies

Explanatory case studies are focused on explanation - they seek to clarify how or why certain phenomena occur. Often used in complex, real-life situations, they can be particularly valuable in clarifying causal relationships among concepts and understanding the interplay between different factors within a specific context.

Intrinsic, instrumental, and collective case studies

These three categories of case studies focus on the nature and purpose of the study. An intrinsic case study is conducted when a researcher has an inherent interest in the case itself. Instrumental case studies are employed when the case is used to provide insight into a particular issue or phenomenon. A collective case study, on the other hand, involves studying multiple cases simultaneously to investigate some general phenomena.

Each type of case study serves a different purpose and has its own strengths and challenges. The selection of the type should be guided by the research question and objectives, as well as the context and constraints of the research.

The flexibility, depth, and contextual richness offered by case studies make this approach an excellent research method for various fields of study. They enable researchers to investigate real-world phenomena within their specific contexts, capturing nuances that other research methods might miss. Across numerous fields, case studies provide valuable insights into complex issues.

Critical information systems research

Case studies provide a detailed understanding of the role and impact of information systems in different contexts. They offer a platform to explore how information systems are designed, implemented, and used and how they interact with various social, economic, and political factors. Case studies in this field often focus on examining the intricate relationship between technology, organizational processes, and user behavior, helping to uncover insights that can inform better system design and implementation.

Health research

Health research is another field where case studies are highly valuable. They offer a way to explore patient experiences, healthcare delivery processes, and the impact of various interventions in a real-world context.

Case studies can provide a deep understanding of a patient's journey, giving insights into the intricacies of disease progression, treatment effects, and the psychosocial aspects of health and illness.

Asthma research studies

Specifically within medical research, studies on asthma often employ case studies to explore the individual and environmental factors that influence asthma development, management, and outcomes. A case study can provide rich, detailed data about individual patients' experiences, from the triggers and symptoms they experience to the effectiveness of various management strategies. This can be crucial for developing patient-centered asthma care approaches.

Other fields

Apart from the fields mentioned, case studies are also extensively used in business and management research, education research, and political sciences, among many others. They provide an opportunity to delve into the intricacies of real-world situations, allowing for a comprehensive understanding of various phenomena.

Case studies, with their depth and contextual focus, offer unique insights across these varied fields. They allow researchers to illuminate the complexities of real-life situations, contributing to both theory and practice.

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Understanding the key elements of case study design is crucial for conducting rigorous and impactful case study research. A well-structured design guides the researcher through the process, ensuring that the study is methodologically sound and its findings are reliable and valid. The main elements of case study design include the research question , propositions, units of analysis, and the logic linking the data to the propositions.

The research question is the foundation of any research study. A good research question guides the direction of the study and informs the selection of the case, the methods of collecting data, and the analysis techniques. A well-formulated research question in case study research is typically clear, focused, and complex enough to merit further detailed examination of the relevant case(s).

Propositions

Propositions, though not necessary in every case study, provide a direction by stating what we might expect to find in the data collected. They guide how data is collected and analyzed by helping researchers focus on specific aspects of the case. They are particularly important in explanatory case studies, which seek to understand the relationships among concepts within the studied phenomenon.

Units of analysis

The unit of analysis refers to the case, or the main entity or entities that are being analyzed in the study. In case study research, the unit of analysis can be an individual, a group, an organization, a decision, an event, or even a time period. It's crucial to clearly define the unit of analysis, as it shapes the qualitative data analysis process by allowing the researcher to analyze a particular case and synthesize analysis across multiple case studies to draw conclusions.

Argumentation

This refers to the inferential model that allows researchers to draw conclusions from the data. The researcher needs to ensure that there is a clear link between the data, the propositions (if any), and the conclusions drawn. This argumentation is what enables the researcher to make valid and credible inferences about the phenomenon under study.

Understanding and carefully considering these elements in the design phase of a case study can significantly enhance the quality of the research. It can help ensure that the study is methodologically sound and its findings contribute meaningful insights about the case.

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Conducting a case study involves several steps, from defining the research question and selecting the case to collecting and analyzing data . This section outlines these key stages, providing a practical guide on how to conduct case study research.

Defining the research question

The first step in case study research is defining a clear, focused research question. This question should guide the entire research process, from case selection to analysis. It's crucial to ensure that the research question is suitable for a case study approach. Typically, such questions are exploratory or descriptive in nature and focus on understanding a phenomenon within its real-life context.

Selecting and defining the case

The selection of the case should be based on the research question and the objectives of the study. It involves choosing a unique example or a set of examples that provide rich, in-depth data about the phenomenon under investigation. After selecting the case, it's crucial to define it clearly, setting the boundaries of the case, including the time period and the specific context.

Previous research can help guide the case study design. When considering a case study, an example of a case could be taken from previous case study research and used to define cases in a new research inquiry. Considering recently published examples can help understand how to select and define cases effectively.

Developing a detailed case study protocol

A case study protocol outlines the procedures and general rules to be followed during the case study. This includes the data collection methods to be used, the sources of data, and the procedures for analysis. Having a detailed case study protocol ensures consistency and reliability in the study.

The protocol should also consider how to work with the people involved in the research context to grant the research team access to collecting data. As mentioned in previous sections of this guide, establishing rapport is an essential component of qualitative research as it shapes the overall potential for collecting and analyzing data.

Collecting data

Gathering data in case study research often involves multiple sources of evidence, including documents, archival records, interviews, observations, and physical artifacts. This allows for a comprehensive understanding of the case. The process for gathering data should be systematic and carefully documented to ensure the reliability and validity of the study.

Analyzing and interpreting data

The next step is analyzing the data. This involves organizing the data , categorizing it into themes or patterns , and interpreting these patterns to answer the research question. The analysis might also involve comparing the findings with prior research or theoretical propositions.

Writing the case study report

The final step is writing the case study report . This should provide a detailed description of the case, the data, the analysis process, and the findings. The report should be clear, organized, and carefully written to ensure that the reader can understand the case and the conclusions drawn from it.

Each of these steps is crucial in ensuring that the case study research is rigorous, reliable, and provides valuable insights about the case.

The type, depth, and quality of data in your study can significantly influence the validity and utility of the study. In case study research, data is usually collected from multiple sources to provide a comprehensive and nuanced understanding of the case. This section will outline the various methods of collecting data used in case study research and discuss considerations for ensuring the quality of the data.

Interviews are a common method of gathering data in case study research. They can provide rich, in-depth data about the perspectives, experiences, and interpretations of the individuals involved in the case. Interviews can be structured , semi-structured , or unstructured , depending on the research question and the degree of flexibility needed.

Observations

Observations involve the researcher observing the case in its natural setting, providing first-hand information about the case and its context. Observations can provide data that might not be revealed in interviews or documents, such as non-verbal cues or contextual information.

Documents and artifacts

Documents and archival records provide a valuable source of data in case study research. They can include reports, letters, memos, meeting minutes, email correspondence, and various public and private documents related to the case.

These records can provide historical context, corroborate evidence from other sources, and offer insights into the case that might not be apparent from interviews or observations.

Physical artifacts refer to any physical evidence related to the case, such as tools, products, or physical environments. These artifacts can provide tangible insights into the case, complementing the data gathered from other sources.

Ensuring the quality of data collection

Determining the quality of data in case study research requires careful planning and execution. It's crucial to ensure that the data is reliable, accurate, and relevant to the research question. This involves selecting appropriate methods of collecting data, properly training interviewers or observers, and systematically recording and storing the data. It also includes considering ethical issues related to collecting and handling data, such as obtaining informed consent and ensuring the privacy and confidentiality of the participants.

Data analysis

Analyzing case study research involves making sense of the rich, detailed data to answer the research question. This process can be challenging due to the volume and complexity of case study data. However, a systematic and rigorous approach to analysis can ensure that the findings are credible and meaningful. This section outlines the main steps and considerations in analyzing data in case study research.

Organizing the data

The first step in the analysis is organizing the data. This involves sorting the data into manageable sections, often according to the data source or the theme. This step can also involve transcribing interviews, digitizing physical artifacts, or organizing observational data.

Categorizing and coding the data

Once the data is organized, the next step is to categorize or code the data. This involves identifying common themes, patterns, or concepts in the data and assigning codes to relevant data segments. Coding can be done manually or with the help of software tools, and in either case, qualitative analysis software can greatly facilitate the entire coding process. Coding helps to reduce the data to a set of themes or categories that can be more easily analyzed.

Identifying patterns and themes

After coding the data, the researcher looks for patterns or themes in the coded data. This involves comparing and contrasting the codes and looking for relationships or patterns among them. The identified patterns and themes should help answer the research question.

Interpreting the data

Once patterns and themes have been identified, the next step is to interpret these findings. This involves explaining what the patterns or themes mean in the context of the research question and the case. This interpretation should be grounded in the data, but it can also involve drawing on theoretical concepts or prior research.

Verification of the data

The last step in the analysis is verification. This involves checking the accuracy and consistency of the analysis process and confirming that the findings are supported by the data. This can involve re-checking the original data, checking the consistency of codes, or seeking feedback from research participants or peers.

Like any research method , case study research has its strengths and limitations. Researchers must be aware of these, as they can influence the design, conduct, and interpretation of the study.

Understanding the strengths and limitations of case study research can also guide researchers in deciding whether this approach is suitable for their research question . This section outlines some of the key strengths and limitations of case study research.

Benefits include the following:

• Rich, detailed data: One of the main strengths of case study research is that it can generate rich, detailed data about the case. This can provide a deep understanding of the case and its context, which can be valuable in exploring complex phenomena.
• Flexibility: Case study research is flexible in terms of design , data collection , and analysis . A sufficient degree of flexibility allows the researcher to adapt the study according to the case and the emerging findings.
• Real-world context: Case study research involves studying the case in its real-world context, which can provide valuable insights into the interplay between the case and its context.
• Multiple sources of evidence: Case study research often involves collecting data from multiple sources , which can enhance the robustness and validity of the findings.

On the other hand, researchers should consider the following limitations:

• Generalizability: A common criticism of case study research is that its findings might not be generalizable to other cases due to the specificity and uniqueness of each case.
• Time and resource intensive: Case study research can be time and resource intensive due to the depth of the investigation and the amount of collected data.
• Complexity of analysis: The rich, detailed data generated in case study research can make analyzing the data challenging.
• Subjectivity: Given the nature of case study research, there may be a higher degree of subjectivity in interpreting the data , so researchers need to reflect on this and transparently convey to audiences how the research was conducted.

Being aware of these strengths and limitations can help researchers design and conduct case study research effectively and interpret and report the findings appropriately.

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What is case study research?

Last updated

8 February 2023

Reviewed by

Cathy Heath

Suppose a company receives a spike in the number of customer complaints, or medical experts discover an outbreak of illness affecting children but are not quite sure of the reason. In both cases, carrying out a case study could be the best way to get answers.

Organization

Case studies can be carried out across different disciplines, including education, medicine, sociology, and business.

Most case studies employ qualitative methods, but quantitative methods can also be used. Researchers can then describe, compare, evaluate, and identify patterns or cause-and-effect relationships between the various variables under study. They can then use this knowledge to decide what action to take. 

Another thing to note is that case studies are generally singular in their focus. This means they narrow focus to a particular area, making them highly subjective. You cannot always generalize the results of a case study and apply them to a larger population. However, they are valuable tools to illustrate a principle or develop a thesis.

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• What are the different types of case study designs?

Researchers can choose from a variety of case study designs. The design they choose is dependent on what questions they need to answer, the context of the research environment, how much data they already have, and what resources are available.

Here are the common types of case study design:

Explanatory

An explanatory case study is an initial explanation of the how or why that is behind something. This design is commonly used when studying a real-life phenomenon or event. Once the organization understands the reasons behind a phenomenon, it can then make changes to enhance or eliminate the variables causing it. 

Here is an example: How is co-teaching implemented in elementary schools? The title for a case study of this subject could be “Case Study of the Implementation of Co-Teaching in Elementary Schools.”

Descriptive

An illustrative or descriptive case study helps researchers shed light on an unfamiliar object or subject after a period of time. The case study provides an in-depth review of the issue at hand and adds real-world examples in the area the researcher wants the audience to understand. 

The researcher makes no inferences or causal statements about the object or subject under review. This type of design is often used to understand cultural shifts.

Here is an example: How did people cope with the 2004 Indian Ocean Tsunami? This case study could be titled "A Case Study of the 2004 Indian Ocean Tsunami and its Effect on the Indonesian Population."

Exploratory

Exploratory research is also called a pilot case study. It is usually the first step within a larger research project, often relying on questionnaires and surveys . Researchers use exploratory research to help narrow down their focus, define parameters, draft a specific research question , and/or identify variables in a larger study. This research design usually covers a wider area than others, and focuses on the ‘what’ and ‘who’ of a topic.

Here is an example: How do nutrition and socialization in early childhood affect learning in children? The title of the exploratory study may be “Case Study of the Effects of Nutrition and Socialization on Learning in Early Childhood.”

An intrinsic case study is specifically designed to look at a unique and special phenomenon. At the start of the study, the researcher defines the phenomenon and the uniqueness that differentiates it from others. 

In this case, researchers do not attempt to generalize, compare, or challenge the existing assumptions. Instead, they explore the unique variables to enhance understanding. Here is an example: “Case Study of Volcanic Lightning.”

This design can also be identified as a cumulative case study. It uses information from past studies or observations of groups of people in certain settings as the foundation of the new study. Given that it takes multiple areas into account, it allows for greater generalization than a single case study. 

The researchers also get an in-depth look at a particular subject from different viewpoints.  Here is an example: “Case Study of how PTSD affected Vietnam and Gulf War Veterans Differently Due to Advances in Military Technology.”

Critical instance

A critical case study incorporates both explanatory and intrinsic study designs. It does not have predetermined purposes beyond an investigation of the said subject. It can be used for a deeper explanation of the cause-and-effect relationship. It can also be used to question a common assumption or myth. 

The findings can then be used further to generalize whether they would also apply in a different environment.  Here is an example: “What Effect Does Prolonged Use of Social Media Have on the Mind of American Youth?”

Instrumental

Instrumental research attempts to achieve goals beyond understanding the object at hand. Researchers explore a larger subject through different, separate studies and use the findings to understand its relationship to another subject. This type of design also provides insight into an issue or helps refine a theory. 

For example, you may want to determine if violent behavior in children predisposes them to crime later in life. The focus is on the relationship between children and violent behavior, and why certain children do become violent. Here is an example: “Violence Breeds Violence: Childhood Exposure and Participation in Adult Crime.”

Evaluation case study design is employed to research the effects of a program, policy, or intervention, and assess its effectiveness and impact on future decision-making. 

For example, you might want to see whether children learn times tables quicker through an educational game on their iPad versus a more teacher-led intervention. Here is an example: “An Investigation of the Impact of an iPad Multiplication Game for Primary School Children.” 

• When do you use case studies?

Case studies are ideal when you want to gain a contextual, concrete, or in-depth understanding of a particular subject. It helps you understand the characteristics, implications, and meanings of the subject.

They are also an excellent choice for those writing a thesis or dissertation, as they help keep the project focused on a particular area when resources or time may be too limited to cover a wider one. You may have to conduct several case studies to explore different aspects of the subject in question and understand the problem.

• What are the steps to follow when conducting a case study?

1. Select a case

Once you identify the problem at hand and come up with questions, identify the case you will focus on. The study can provide insights into the subject at hand, challenge existing assumptions, propose a course of action, and/or open up new areas for further research.

2. Create a theoretical framework

While you will be focusing on a specific detail, the case study design you choose should be linked to existing knowledge on the topic. This prevents it from becoming an isolated description and allows for enhancing the existing information. 

It may expand the current theory by bringing up new ideas or concepts, challenge established assumptions, or exemplify a theory by exploring how it answers the problem at hand. A theoretical framework starts with a literature review of the sources relevant to the topic in focus. This helps in identifying key concepts to guide analysis and interpretation.

3. Collect the data

Case studies are frequently supplemented with qualitative data such as observations, interviews, and a review of both primary and secondary sources such as official records, news articles, and photographs. There may also be quantitative data —this data assists in understanding the case thoroughly.

4. Analyze your case

The results of the research depend on the research design. Most case studies are structured with chapters or topic headings for easy explanation and presentation. Others may be written as narratives to allow researchers to explore various angles of the topic and analyze its meanings and implications.

In all areas, always give a detailed contextual understanding of the case and connect it to the existing theory and literature before discussing how it fits into your problem area.

• What are some case study examples?

What are the best approaches for introducing our product into the Kenyan market?

How does the change in marketing strategy aid in increasing the sales volumes of product Y?

How can teachers enhance student participation in classrooms?

How does poverty affect literacy levels in children?

Case study topics

Case study of product marketing strategies in the Kenyan market

Case study of the effects of a marketing strategy change on product Y sales volumes

Case study of X school teachers that encourage active student participation in the classroom

Case study of the effects of poverty on literacy levels in children

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What the Case Study Method Really Teaches

• Nitin Nohria

Seven meta-skills that stick even if the cases fade from memory.

It’s been 100 years since Harvard Business School began using the case study method. Beyond teaching specific subject matter, the case study method excels in instilling meta-skills in students. This article explains the importance of seven such skills: preparation, discernment, bias recognition, judgement, collaboration, curiosity, and self-confidence.

During my decade as dean of Harvard Business School, I spent hundreds of hours talking with our alumni. To enliven these conversations, I relied on a favorite question: “What was the most important thing you learned from your time in our MBA program?”

• Nitin Nohria is the George F. Baker Professor of Business Administration, Distinguished University Service Professor, and former dean of Harvard Business School.

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What Is a Case Study?

Weighing the pros and cons of this method of research

Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

Cara Lustik is a fact-checker and copywriter.

Verywell / Colleen Tighe

• Pros and Cons

What Types of Case Studies Are Out There?

Where do you find data for a case study, how do i write a psychology case study.

A case study is an in-depth study of one person, group, or event. In a case study, nearly every aspect of the subject's life and history is analyzed to seek patterns and causes of behavior. Case studies can be used in many different fields, including psychology, medicine, education, anthropology, political science, and social work.

The point of a case study is to learn as much as possible about an individual or group so that the information can be generalized to many others. Unfortunately, case studies tend to be highly subjective, and it is sometimes difficult to generalize results to a larger population.

While case studies focus on a single individual or group, they follow a format similar to other types of psychology writing. If you are writing a case study, we got you—here are some rules of APA format to reference.  

At a Glance

A case study, or an in-depth study of a person, group, or event, can be a useful research tool when used wisely. In many cases, case studies are best used in situations where it would be difficult or impossible for you to conduct an experiment. They are helpful for looking at unique situations and allow researchers to gather a lot of˜ information about a specific individual or group of people. However, it's important to be cautious of any bias we draw from them as they are highly subjective.

What Are the Benefits and Limitations of Case Studies?

A case study can have its strengths and weaknesses. Researchers must consider these pros and cons before deciding if this type of study is appropriate for their needs.

One of the greatest advantages of a case study is that it allows researchers to investigate things that are often difficult or impossible to replicate in a lab. Some other benefits of a case study:

• Allows researchers to capture information on the 'how,' 'what,' and 'why,' of something that's implemented
• Gives researchers the chance to collect information on why one strategy might be chosen over another
• Permits researchers to develop hypotheses that can be explored in experimental research

On the other hand, a case study can have some drawbacks:

• It cannot necessarily be generalized to the larger population
• Cannot demonstrate cause and effect
• It may not be scientifically rigorous
• It can lead to bias

Researchers may choose to perform a case study if they want to explore a unique or recently discovered phenomenon. Through their insights, researchers develop additional ideas and study questions that might be explored in future studies.

It's important to remember that the insights from case studies cannot be used to determine cause-and-effect relationships between variables. However, case studies may be used to develop hypotheses that can then be addressed in experimental research.

Case Study Examples

There have been a number of notable case studies in the history of psychology. Much of  Freud's work and theories were developed through individual case studies. Some great examples of case studies in psychology include:

• Anna O : Anna O. was a pseudonym of a woman named Bertha Pappenheim, a patient of a physician named Josef Breuer. While she was never a patient of Freud's, Freud and Breuer discussed her case extensively. The woman was experiencing symptoms of a condition that was then known as hysteria and found that talking about her problems helped relieve her symptoms. Her case played an important part in the development of talk therapy as an approach to mental health treatment.
• Phineas Gage : Phineas Gage was a railroad employee who experienced a terrible accident in which an explosion sent a metal rod through his skull, damaging important portions of his brain. Gage recovered from his accident but was left with serious changes in both personality and behavior.
• Genie : Genie was a young girl subjected to horrific abuse and isolation. The case study of Genie allowed researchers to study whether language learning was possible, even after missing critical periods for language development. Her case also served as an example of how scientific research may interfere with treatment and lead to further abuse of vulnerable individuals.

Such cases demonstrate how case research can be used to study things that researchers could not replicate in experimental settings. In Genie's case, her horrific abuse denied her the opportunity to learn a language at critical points in her development.

This is clearly not something researchers could ethically replicate, but conducting a case study on Genie allowed researchers to study phenomena that are otherwise impossible to reproduce.

There are a few different types of case studies that psychologists and other researchers might use:

• Collective case studies : These involve studying a group of individuals. Researchers might study a group of people in a certain setting or look at an entire community. For example, psychologists might explore how access to resources in a community has affected the collective mental well-being of those who live there.
• Descriptive case studies : These involve starting with a descriptive theory. The subjects are then observed, and the information gathered is compared to the pre-existing theory.
• Explanatory case studies : These   are often used to do causal investigations. In other words, researchers are interested in looking at factors that may have caused certain things to occur.
• Exploratory case studies : These are sometimes used as a prelude to further, more in-depth research. This allows researchers to gather more information before developing their research questions and hypotheses .
• Instrumental case studies : These occur when the individual or group allows researchers to understand more than what is initially obvious to observers.
• Intrinsic case studies : This type of case study is when the researcher has a personal interest in the case. Jean Piaget's observations of his own children are good examples of how an intrinsic case study can contribute to the development of a psychological theory.

The three main case study types often used are intrinsic, instrumental, and collective. Intrinsic case studies are useful for learning about unique cases. Instrumental case studies help look at an individual to learn more about a broader issue. A collective case study can be useful for looking at several cases simultaneously.

The type of case study that psychology researchers use depends on the unique characteristics of the situation and the case itself.

There are a number of different sources and methods that researchers can use to gather information about an individual or group. Six major sources that have been identified by researchers are:

• Archival records : Census records, survey records, and name lists are examples of archival records.
• Direct observation : This strategy involves observing the subject, often in a natural setting . While an individual observer is sometimes used, it is more common to utilize a group of observers.
• Documents : Letters, newspaper articles, administrative records, etc., are the types of documents often used as sources.
• Interviews : Interviews are one of the most important methods for gathering information in case studies. An interview can involve structured survey questions or more open-ended questions.
• Participant observation : When the researcher serves as a participant in events and observes the actions and outcomes, it is called participant observation.
• Physical artifacts : Tools, objects, instruments, and other artifacts are often observed during a direct observation of the subject.

If you have been directed to write a case study for a psychology course, be sure to check with your instructor for any specific guidelines you need to follow. If you are writing your case study for a professional publication, check with the publisher for their specific guidelines for submitting a case study.

Here is a general outline of what should be included in a case study.

Section 1: A Case History

This section will have the following structure and content:

Background information : The first section of your paper will present your client's background. Include factors such as age, gender, work, health status, family mental health history, family and social relationships, drug and alcohol history, life difficulties, goals, and coping skills and weaknesses.

Description of the presenting problem : In the next section of your case study, you will describe the problem or symptoms that the client presented with.

Describe any physical, emotional, or sensory symptoms reported by the client. Thoughts, feelings, and perceptions related to the symptoms should also be noted. Any screening or diagnostic assessments that are used should also be described in detail and all scores reported.

Your diagnosis : Provide your diagnosis and give the appropriate Diagnostic and Statistical Manual code. Explain how you reached your diagnosis, how the client's symptoms fit the diagnostic criteria for the disorder(s), or any possible difficulties in reaching a diagnosis.

Section 2: Treatment Plan

This portion of the paper will address the chosen treatment for the condition. This might also include the theoretical basis for the chosen treatment or any other evidence that might exist to support why this approach was chosen.

• Cognitive behavioral approach : Explain how a cognitive behavioral therapist would approach treatment. Offer background information on cognitive behavioral therapy and describe the treatment sessions, client response, and outcome of this type of treatment. Make note of any difficulties or successes encountered by your client during treatment.
• Humanistic approach : Describe a humanistic approach that could be used to treat your client, such as client-centered therapy . Provide information on the type of treatment you chose, the client's reaction to the treatment, and the end result of this approach. Explain why the treatment was successful or unsuccessful.
• Psychoanalytic approach : Describe how a psychoanalytic therapist would view the client's problem. Provide some background on the psychoanalytic approach and cite relevant references. Explain how psychoanalytic therapy would be used to treat the client, how the client would respond to therapy, and the effectiveness of this treatment approach.
• Pharmacological approach : If treatment primarily involves the use of medications, explain which medications were used and why. Provide background on the effectiveness of these medications and how monotherapy may compare with an approach that combines medications with therapy or other treatments.

This section of a case study should also include information about the treatment goals, process, and outcomes.

When you are writing a case study, you should also include a section where you discuss the case study itself, including the strengths and limitiations of the study. You should note how the findings of your case study might support previous research. 

In your discussion section, you should also describe some of the implications of your case study. What ideas or findings might require further exploration? How might researchers go about exploring some of these questions in additional studies?

Need More Tips?

Here are a few additional pointers to keep in mind when formatting your case study:

• Never refer to the subject of your case study as "the client." Instead, use their name or a pseudonym.
• Read examples of case studies to gain an idea about the style and format.
• Remember to use APA format when citing references .

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach .  BMC Med Res Methodol . 2011;11:100.

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach . BMC Med Res Methodol . 2011 Jun 27;11:100. doi:10.1186/1471-2288-11-100

Gagnon, Yves-Chantal.  The Case Study as Research Method: A Practical Handbook . Canada, Chicago Review Press Incorporated DBA Independent Pub Group, 2010.

Yin, Robert K. Case Study Research and Applications: Design and Methods . United States, SAGE Publications, 2017.

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

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• Knowledge Base
• Methodology
• Case Study | Definition, Examples & Methods

Case Study | Definition, Examples & Methods

Published on 5 May 2022 by Shona McCombes . Revised on 30 January 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organisation, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.

A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating, and understanding different aspects of a research problem .

Table of contents

When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyse the case.

A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.

Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.

You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.

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Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:

• Provide new or unexpected insights into the subject
• Challenge or complicate existing assumptions and theories
• Propose practical courses of action to resolve a problem
• Open up new directions for future research

Unlike quantitative or experimental research, a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.

If you find yourself aiming to simultaneously investigate and solve an issue, consider conducting action research . As its name suggests, action research conducts research and takes action at the same time, and is highly iterative and flexible. 

However, you can also choose a more common or representative case to exemplify a particular category, experience, or phenomenon.

While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:

• Exemplify a theory by showing how it explains the case under investigation
• Expand on a theory by uncovering new concepts and ideas that need to be incorporated
• Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions

To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.

There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews, observations, and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data .

The aim is to gain as thorough an understanding as possible of the case and its context.

In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.

How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis, with separate sections or chapters for the methods , results , and discussion .

Others are written in a more narrative style, aiming to explore the case from various angles and analyse its meanings and implications (for example, by using textual analysis or discourse analysis ).

In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.

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Organizing Your Social Sciences Research Assignments

• Annotated Bibliography
• Analyzing a Scholarly Journal Article
• Group Presentations
• Dealing with Nervousness
• Using Visual Aids
• Grading Someone Else's Paper
• Types of Structured Group Activities
• Group Project Survival Skills
• Leading a Class Discussion
• Multiple Book Review Essay
• Reviewing Collected Works
• Writing a Case Analysis Paper
• Writing a Case Study
• About Informed Consent
• Writing Field Notes
• Writing a Policy Memo
• Writing a Reflective Paper
• Writing a Research Proposal
• Generative AI and Writing
• Acknowledgments

A case study research paper examines a person, place, event, condition, phenomenon, or other type of subject of analysis in order to extrapolate  key themes and results that help predict future trends, illuminate previously hidden issues that can be applied to practice, and/or provide a means for understanding an important research problem with greater clarity. A case study research paper usually examines a single subject of analysis, but case study papers can also be designed as a comparative investigation that shows relationships between two or more subjects. The methods used to study a case can rest within a quantitative, qualitative, or mixed-method investigative paradigm.

Case Studies. Writing@CSU. Colorado State University; Mills, Albert J. , Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010 ; “What is a Case Study?” In Swanborn, Peter G. Case Study Research: What, Why and How? London: SAGE, 2010.

How to Approach Writing a Case Study Research Paper

General information about how to choose a topic to investigate can be found under the " Choosing a Research Problem " tab in the Organizing Your Social Sciences Research Paper writing guide. Review this page because it may help you identify a subject of analysis that can be investigated using a case study design.

However, identifying a case to investigate involves more than choosing the research problem . A case study encompasses a problem contextualized around the application of in-depth analysis, interpretation, and discussion, often resulting in specific recommendations for action or for improving existing conditions. As Seawright and Gerring note, practical considerations such as time and access to information can influence case selection, but these issues should not be the sole factors used in describing the methodological justification for identifying a particular case to study. Given this, selecting a case includes considering the following:

• The case represents an unusual or atypical example of a research problem that requires more in-depth analysis? Cases often represent a topic that rests on the fringes of prior investigations because the case may provide new ways of understanding the research problem. For example, if the research problem is to identify strategies to improve policies that support girl's access to secondary education in predominantly Muslim nations, you could consider using Azerbaijan as a case study rather than selecting a more obvious nation in the Middle East. Doing so may reveal important new insights into recommending how governments in other predominantly Muslim nations can formulate policies that support improved access to education for girls.
• The case provides important insight or illuminate a previously hidden problem? In-depth analysis of a case can be based on the hypothesis that the case study will reveal trends or issues that have not been exposed in prior research or will reveal new and important implications for practice. For example, anecdotal evidence may suggest drug use among homeless veterans is related to their patterns of travel throughout the day. Assuming prior studies have not looked at individual travel choices as a way to study access to illicit drug use, a case study that observes a homeless veteran could reveal how issues of personal mobility choices facilitate regular access to illicit drugs. Note that it is important to conduct a thorough literature review to ensure that your assumption about the need to reveal new insights or previously hidden problems is valid and evidence-based.
• The case challenges and offers a counter-point to prevailing assumptions? Over time, research on any given topic can fall into a trap of developing assumptions based on outdated studies that are still applied to new or changing conditions or the idea that something should simply be accepted as "common sense," even though the issue has not been thoroughly tested in current practice. A case study analysis may offer an opportunity to gather evidence that challenges prevailing assumptions about a research problem and provide a new set of recommendations applied to practice that have not been tested previously. For example, perhaps there has been a long practice among scholars to apply a particular theory in explaining the relationship between two subjects of analysis. Your case could challenge this assumption by applying an innovative theoretical framework [perhaps borrowed from another discipline] to explore whether this approach offers new ways of understanding the research problem. Taking a contrarian stance is one of the most important ways that new knowledge and understanding develops from existing literature.
• The case provides an opportunity to pursue action leading to the resolution of a problem? Another way to think about choosing a case to study is to consider how the results from investigating a particular case may result in findings that reveal ways in which to resolve an existing or emerging problem. For example, studying the case of an unforeseen incident, such as a fatal accident at a railroad crossing, can reveal hidden issues that could be applied to preventative measures that contribute to reducing the chance of accidents in the future. In this example, a case study investigating the accident could lead to a better understanding of where to strategically locate additional signals at other railroad crossings so as to better warn drivers of an approaching train, particularly when visibility is hindered by heavy rain, fog, or at night.
• The case offers a new direction in future research? A case study can be used as a tool for an exploratory investigation that highlights the need for further research about the problem. A case can be used when there are few studies that help predict an outcome or that establish a clear understanding about how best to proceed in addressing a problem. For example, after conducting a thorough literature review [very important!], you discover that little research exists showing the ways in which women contribute to promoting water conservation in rural communities of east central Africa. A case study of how women contribute to saving water in a rural village of Uganda can lay the foundation for understanding the need for more thorough research that documents how women in their roles as cooks and family caregivers think about water as a valuable resource within their community. This example of a case study could also point to the need for scholars to build new theoretical frameworks around the topic [e.g., applying feminist theories of work and family to the issue of water conservation].

Eisenhardt, Kathleen M. “Building Theories from Case Study Research.” Academy of Management Review 14 (October 1989): 532-550; Emmel, Nick. Sampling and Choosing Cases in Qualitative Research: A Realist Approach . Thousand Oaks, CA: SAGE Publications, 2013; Gerring, John. “What Is a Case Study and What Is It Good for?” American Political Science Review 98 (May 2004): 341-354; Mills, Albert J. , Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010; Seawright, Jason and John Gerring. "Case Selection Techniques in Case Study Research." Political Research Quarterly 61 (June 2008): 294-308.

Structure and Writing Style

The purpose of a paper in the social sciences designed around a case study is to thoroughly investigate a subject of analysis in order to reveal a new understanding about the research problem and, in so doing, contributing new knowledge to what is already known from previous studies. In applied social sciences disciplines [e.g., education, social work, public administration, etc.], case studies may also be used to reveal best practices, highlight key programs, or investigate interesting aspects of professional work.

In general, the structure of a case study research paper is not all that different from a standard college-level research paper. However, there are subtle differences you should be aware of. Here are the key elements to organizing and writing a case study research paper.

I.  Introduction

As with any research paper, your introduction should serve as a roadmap for your readers to ascertain the scope and purpose of your study . The introduction to a case study research paper, however, should not only describe the research problem and its significance, but you should also succinctly describe why the case is being used and how it relates to addressing the problem. The two elements should be linked. With this in mind, a good introduction answers these four questions:

• What is being studied? Describe the research problem and describe the subject of analysis [the case] you have chosen to address the problem. Explain how they are linked and what elements of the case will help to expand knowledge and understanding about the problem.
• Why is this topic important to investigate? Describe the significance of the research problem and state why a case study design and the subject of analysis that the paper is designed around is appropriate in addressing the problem.
• What did we know about this topic before I did this study? Provide background that helps lead the reader into the more in-depth literature review to follow. If applicable, summarize prior case study research applied to the research problem and why it fails to adequately address the problem. Describe why your case will be useful. If no prior case studies have been used to address the research problem, explain why you have selected this subject of analysis.
• How will this study advance new knowledge or new ways of understanding? Explain why your case study will be suitable in helping to expand knowledge and understanding about the research problem.

Each of these questions should be addressed in no more than a few paragraphs. Exceptions to this can be when you are addressing a complex research problem or subject of analysis that requires more in-depth background information.

II.  Literature Review

The literature review for a case study research paper is generally structured the same as it is for any college-level research paper. The difference, however, is that the literature review is focused on providing background information and  enabling historical interpretation of the subject of analysis in relation to the research problem the case is intended to address . This includes synthesizing studies that help to:

• Place relevant works in the context of their contribution to understanding the case study being investigated . This would involve summarizing studies that have used a similar subject of analysis to investigate the research problem. If there is literature using the same or a very similar case to study, you need to explain why duplicating past research is important [e.g., conditions have changed; prior studies were conducted long ago, etc.].
• Describe the relationship each work has to the others under consideration that informs the reader why this case is applicable . Your literature review should include a description of any works that support using the case to investigate the research problem and the underlying research questions.
• Identify new ways to interpret prior research using the case study . If applicable, review any research that has examined the research problem using a different research design. Explain how your use of a case study design may reveal new knowledge or a new perspective or that can redirect research in an important new direction.
• Resolve conflicts amongst seemingly contradictory previous studies . This refers to synthesizing any literature that points to unresolved issues of concern about the research problem and describing how the subject of analysis that forms the case study can help resolve these existing contradictions.
• Point the way in fulfilling a need for additional research . Your review should examine any literature that lays a foundation for understanding why your case study design and the subject of analysis around which you have designed your study may reveal a new way of approaching the research problem or offer a perspective that points to the need for additional research.
• Expose any gaps that exist in the literature that the case study could help to fill . Summarize any literature that not only shows how your subject of analysis contributes to understanding the research problem, but how your case contributes to a new way of understanding the problem that prior research has failed to do.
• Locate your own research within the context of existing literature [very important!] . Collectively, your literature review should always place your case study within the larger domain of prior research about the problem. The overarching purpose of reviewing pertinent literature in a case study paper is to demonstrate that you have thoroughly identified and synthesized prior studies in relation to explaining the relevance of the case in addressing the research problem.

III.  Method

In this section, you explain why you selected a particular case [i.e., subject of analysis] and the strategy you used to identify and ultimately decide that your case was appropriate in addressing the research problem. The way you describe the methods used varies depending on the type of subject of analysis that constitutes your case study.

If your subject of analysis is an incident or event . In the social and behavioral sciences, the event or incident that represents the case to be studied is usually bounded by time and place, with a clear beginning and end and with an identifiable location or position relative to its surroundings. The subject of analysis can be a rare or critical event or it can focus on a typical or regular event. The purpose of studying a rare event is to illuminate new ways of thinking about the broader research problem or to test a hypothesis. Critical incident case studies must describe the method by which you identified the event and explain the process by which you determined the validity of this case to inform broader perspectives about the research problem or to reveal new findings. However, the event does not have to be a rare or uniquely significant to support new thinking about the research problem or to challenge an existing hypothesis. For example, Walo, Bull, and Breen conducted a case study to identify and evaluate the direct and indirect economic benefits and costs of a local sports event in the City of Lismore, New South Wales, Australia. The purpose of their study was to provide new insights from measuring the impact of a typical local sports event that prior studies could not measure well because they focused on large "mega-events." Whether the event is rare or not, the methods section should include an explanation of the following characteristics of the event: a) when did it take place; b) what were the underlying circumstances leading to the event; and, c) what were the consequences of the event in relation to the research problem.

If your subject of analysis is a person. Explain why you selected this particular individual to be studied and describe what experiences they have had that provide an opportunity to advance new understandings about the research problem. Mention any background about this person which might help the reader understand the significance of their experiences that make them worthy of study. This includes describing the relationships this person has had with other people, institutions, and/or events that support using them as the subject for a case study research paper. It is particularly important to differentiate the person as the subject of analysis from others and to succinctly explain how the person relates to examining the research problem [e.g., why is one politician in a particular local election used to show an increase in voter turnout from any other candidate running in the election]. Note that these issues apply to a specific group of people used as a case study unit of analysis [e.g., a classroom of students].

If your subject of analysis is a place. In general, a case study that investigates a place suggests a subject of analysis that is unique or special in some way and that this uniqueness can be used to build new understanding or knowledge about the research problem. A case study of a place must not only describe its various attributes relevant to the research problem [e.g., physical, social, historical, cultural, economic, political], but you must state the method by which you determined that this place will illuminate new understandings about the research problem. It is also important to articulate why a particular place as the case for study is being used if similar places also exist [i.e., if you are studying patterns of homeless encampments of veterans in open spaces, explain why you are studying Echo Park in Los Angeles rather than Griffith Park?]. If applicable, describe what type of human activity involving this place makes it a good choice to study [e.g., prior research suggests Echo Park has more homeless veterans].

If your subject of analysis is a phenomenon. A phenomenon refers to a fact, occurrence, or circumstance that can be studied or observed but with the cause or explanation to be in question. In this sense, a phenomenon that forms your subject of analysis can encompass anything that can be observed or presumed to exist but is not fully understood. In the social and behavioral sciences, the case usually focuses on human interaction within a complex physical, social, economic, cultural, or political system. For example, the phenomenon could be the observation that many vehicles used by ISIS fighters are small trucks with English language advertisements on them. The research problem could be that ISIS fighters are difficult to combat because they are highly mobile. The research questions could be how and by what means are these vehicles used by ISIS being supplied to the militants and how might supply lines to these vehicles be cut off? How might knowing the suppliers of these trucks reveal larger networks of collaborators and financial support? A case study of a phenomenon most often encompasses an in-depth analysis of a cause and effect that is grounded in an interactive relationship between people and their environment in some way.

NOTE:   The choice of the case or set of cases to study cannot appear random. Evidence that supports the method by which you identified and chose your subject of analysis should clearly support investigation of the research problem and linked to key findings from your literature review. Be sure to cite any studies that helped you determine that the case you chose was appropriate for examining the problem.

IV.  Discussion

The main elements of your discussion section are generally the same as any research paper, but centered around interpreting and drawing conclusions about the key findings from your analysis of the case study. Note that a general social sciences research paper may contain a separate section to report findings. However, in a paper designed around a case study, it is common to combine a description of the results with the discussion about their implications. The objectives of your discussion section should include the following:

Reiterate the Research Problem/State the Major Findings Briefly reiterate the research problem you are investigating and explain why the subject of analysis around which you designed the case study were used. You should then describe the findings revealed from your study of the case using direct, declarative, and succinct proclamation of the study results. Highlight any findings that were unexpected or especially profound.

Explain the Meaning of the Findings and Why They are Important Systematically explain the meaning of your case study findings and why you believe they are important. Begin this part of the section by repeating what you consider to be your most important or surprising finding first, then systematically review each finding. Be sure to thoroughly extrapolate what your analysis of the case can tell the reader about situations or conditions beyond the actual case that was studied while, at the same time, being careful not to misconstrue or conflate a finding that undermines the external validity of your conclusions.

Relate the Findings to Similar Studies No study in the social sciences is so novel or possesses such a restricted focus that it has absolutely no relation to previously published research. The discussion section should relate your case study results to those found in other studies, particularly if questions raised from prior studies served as the motivation for choosing your subject of analysis. This is important because comparing and contrasting the findings of other studies helps support the overall importance of your results and it highlights how and in what ways your case study design and the subject of analysis differs from prior research about the topic.

Consider Alternative Explanations of the Findings Remember that the purpose of social science research is to discover and not to prove. When writing the discussion section, you should carefully consider all possible explanations revealed by the case study results, rather than just those that fit your hypothesis or prior assumptions and biases. Be alert to what the in-depth analysis of the case may reveal about the research problem, including offering a contrarian perspective to what scholars have stated in prior research if that is how the findings can be interpreted from your case.

Acknowledge the Study's Limitations You can state the study's limitations in the conclusion section of your paper but describing the limitations of your subject of analysis in the discussion section provides an opportunity to identify the limitations and explain why they are not significant. This part of the discussion section should also note any unanswered questions or issues your case study could not address. More detailed information about how to document any limitations to your research can be found here .

Suggest Areas for Further Research Although your case study may offer important insights about the research problem, there are likely additional questions related to the problem that remain unanswered or findings that unexpectedly revealed themselves as a result of your in-depth analysis of the case. Be sure that the recommendations for further research are linked to the research problem and that you explain why your recommendations are valid in other contexts and based on the original assumptions of your study.

V.  Conclusion

As with any research paper, you should summarize your conclusion in clear, simple language; emphasize how the findings from your case study differs from or supports prior research and why. Do not simply reiterate the discussion section. Provide a synthesis of key findings presented in the paper to show how these converge to address the research problem. If you haven't already done so in the discussion section, be sure to document the limitations of your case study and any need for further research.

The function of your paper's conclusion is to: 1) reiterate the main argument supported by the findings from your case study; 2) state clearly the context, background, and necessity of pursuing the research problem using a case study design in relation to an issue, controversy, or a gap found from reviewing the literature; and, 3) provide a place to persuasively and succinctly restate the significance of your research problem, given that the reader has now been presented with in-depth information about the topic.

Consider the following points to help ensure your conclusion is appropriate:

• If the argument or purpose of your paper is complex, you may need to summarize these points for your reader.
• If prior to your conclusion, you have not yet explained the significance of your findings or if you are proceeding inductively, use the conclusion of your paper to describe your main points and explain their significance.
• Move from a detailed to a general level of consideration of the case study's findings that returns the topic to the context provided by the introduction or within a new context that emerges from your case study findings.

Note that, depending on the discipline you are writing in or the preferences of your professor, the concluding paragraph may contain your final reflections on the evidence presented as it applies to practice or on the essay's central research problem. However, the nature of being introspective about the subject of analysis you have investigated will depend on whether you are explicitly asked to express your observations in this way.

Problems to Avoid

Overgeneralization One of the goals of a case study is to lay a foundation for understanding broader trends and issues applied to similar circumstances. However, be careful when drawing conclusions from your case study. They must be evidence-based and grounded in the results of the study; otherwise, it is merely speculation. Looking at a prior example, it would be incorrect to state that a factor in improving girls access to education in Azerbaijan and the policy implications this may have for improving access in other Muslim nations is due to girls access to social media if there is no documentary evidence from your case study to indicate this. There may be anecdotal evidence that retention rates were better for girls who were engaged with social media, but this observation would only point to the need for further research and would not be a definitive finding if this was not a part of your original research agenda.

Failure to Document Limitations No case is going to reveal all that needs to be understood about a research problem. Therefore, just as you have to clearly state the limitations of a general research study , you must describe the specific limitations inherent in the subject of analysis. For example, the case of studying how women conceptualize the need for water conservation in a village in Uganda could have limited application in other cultural contexts or in areas where fresh water from rivers or lakes is plentiful and, therefore, conservation is understood more in terms of managing access rather than preserving access to a scarce resource.

Failure to Extrapolate All Possible Implications Just as you don't want to over-generalize from your case study findings, you also have to be thorough in the consideration of all possible outcomes or recommendations derived from your findings. If you do not, your reader may question the validity of your analysis, particularly if you failed to document an obvious outcome from your case study research. For example, in the case of studying the accident at the railroad crossing to evaluate where and what types of warning signals should be located, you failed to take into consideration speed limit signage as well as warning signals. When designing your case study, be sure you have thoroughly addressed all aspects of the problem and do not leave gaps in your analysis that leave the reader questioning the results.

Case Studies. Writing@CSU. Colorado State University; Gerring, John. Case Study Research: Principles and Practices . New York: Cambridge University Press, 2007; Merriam, Sharan B. Qualitative Research and Case Study Applications in Education . Rev. ed. San Francisco, CA: Jossey-Bass, 1998; Miller, Lisa L. “The Use of Case Studies in Law and Social Science Research.” Annual Review of Law and Social Science 14 (2018): TBD; Mills, Albert J., Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010; Putney, LeAnn Grogan. "Case Study." In Encyclopedia of Research Design , Neil J. Salkind, editor. (Thousand Oaks, CA: SAGE Publications, 2010), pp. 116-120; Simons, Helen. Case Study Research in Practice . London: SAGE Publications, 2009;  Kratochwill,  Thomas R. and Joel R. Levin, editors. Single-Case Research Design and Analysis: New Development for Psychology and Education .  Hilldsale, NJ: Lawrence Erlbaum Associates, 1992; Swanborn, Peter G. Case Study Research: What, Why and How? London : SAGE, 2010; Yin, Robert K. Case Study Research: Design and Methods . 6th edition. Los Angeles, CA, SAGE Publications, 2014; Walo, Maree, Adrian Bull, and Helen Breen. “Achieving Economic Benefits at Local Events: A Case Study of a Local Sports Event.” Festival Management and Event Tourism 4 (1996): 95-106.

Writing Tip

At Least Five Misconceptions about Case Study Research

Social science case studies are often perceived as limited in their ability to create new knowledge because they are not randomly selected and findings cannot be generalized to larger populations. Flyvbjerg examines five misunderstandings about case study research and systematically "corrects" each one. To quote, these are:

Misunderstanding 1 :  General, theoretical [context-independent] knowledge is more valuable than concrete, practical [context-dependent] knowledge. Misunderstanding 2 :  One cannot generalize on the basis of an individual case; therefore, the case study cannot contribute to scientific development. Misunderstanding 3 :  The case study is most useful for generating hypotheses; that is, in the first stage of a total research process, whereas other methods are more suitable for hypotheses testing and theory building. Misunderstanding 4 :  The case study contains a bias toward verification, that is, a tendency to confirm the researcher’s preconceived notions. Misunderstanding 5 :  It is often difficult to summarize and develop general propositions and theories on the basis of specific case studies [p. 221].

While writing your paper, think introspectively about how you addressed these misconceptions because to do so can help you strengthen the validity and reliability of your research by clarifying issues of case selection, the testing and challenging of existing assumptions, the interpretation of key findings, and the summation of case outcomes. Think of a case study research paper as a complete, in-depth narrative about the specific properties and key characteristics of your subject of analysis applied to the research problem.

Flyvbjerg, Bent. “Five Misunderstandings About Case-Study Research.” Qualitative Inquiry 12 (April 2006): 219-245.

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Research Writing and Analysis

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Writing a Case Study

What is a case study?

A Case study is: 

• An in-depth research design that primarily uses a qualitative methodology but sometimes​​ includes quantitative methodology.
• Used to examine an identifiable problem confirmed through research.
• Used to investigate an individual, group of people, organization, or event.
• Used to mostly answer "how" and "why" questions.

What are the different types of case studies?

Note: These are the primary case studies. As you continue to research and learn

about case studies you will begin to find a robust list of different types. 

Who are your case study participants?

What is triangulation ? 

Validity and credibility are an essential part of the case study. Therefore, the researcher should include triangulation to ensure trustworthiness while accurately reflecting what the researcher seeks to investigate.

How to write a Case Study?

When developing a case study, there are different ways you could present the information, but remember to include the five parts for your case study.

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How to write a case study — examples, templates, and tools

It’s a marketer’s job to communicate the effectiveness of a product or service to potential and current customers to convince them to buy and keep business moving. One of the best methods for doing this is to share success stories that are relatable to prospects and customers based on their pain points, experiences, and overall needs.

That’s where case studies come in. Case studies are an essential part of a content marketing plan. These in-depth stories of customer experiences are some of the most effective at demonstrating the value of a product or service. Yet many marketers don’t use them, whether because of their regimented formats or the process of customer involvement and approval.

A case study is a powerful tool for showcasing your hard work and the success your customer achieved. But writing a great case study can be difficult if you’ve never done it before or if it’s been a while. This guide will show you how to write an effective case study and provide real-world examples and templates that will keep readers engaged and support your business.

In this article, you’ll learn:

What is a case study?

How to write a case study, case study templates, case study examples, case study tools.

A case study is the detailed story of a customer’s experience with a product or service that demonstrates their success and often includes measurable outcomes. Case studies are used in a range of fields and for various reasons, from business to academic research. They’re especially impactful in marketing as brands work to convince and convert consumers with relatable, real-world stories of actual customer experiences.

The best case studies tell the story of a customer’s success, including the steps they took, the results they achieved, and the support they received from a brand along the way. To write a great case study, you need to:

• Celebrate the customer and make them — not a product or service — the star of the story.
• Craft the story with specific audiences or target segments in mind so that the story of one customer will be viewed as relatable and actionable for another customer.
• Write copy that is easy to read and engaging so that readers will gain the insights and messages intended.
• Follow a standardized format that includes all of the essentials a potential customer would find interesting and useful.
• Support all of the claims for success made in the story with data in the forms of hard numbers and customer statements.

Case studies are a type of review but more in depth, aiming to show — rather than just tell — the positive experiences that customers have with a brand. Notably, 89% of consumers read reviews before deciding to buy, and 79% view case study content as part of their purchasing process. When it comes to B2B sales, 52% of buyers rank case studies as an important part of their evaluation process.

Telling a brand story through the experience of a tried-and-true customer matters. The story is relatable to potential new customers as they imagine themselves in the shoes of the company or individual featured in the case study. Showcasing previous customers can help new ones see themselves engaging with your brand in the ways that are most meaningful to them.

Besides sharing the perspective of another customer, case studies stand out from other content marketing forms because they are based on evidence. Whether pulling from client testimonials or data-driven results, case studies tend to have more impact on new business because the story contains information that is both objective (data) and subjective (customer experience) — and the brand doesn’t sound too self-promotional.

Case studies are unique in that there’s a fairly standardized format for telling a customer’s story. But that doesn’t mean there isn’t room for creativity. It’s all about making sure that teams are clear on the goals for the case study — along with strategies for supporting content and channels — and understanding how the story fits within the framework of the company’s overall marketing goals.

Here are the basic steps to writing a good case study.

1. Identify your goal

Start by defining exactly who your case study will be designed to help. Case studies are about specific instances where a company works with a customer to achieve a goal. Identify which customers are likely to have these goals, as well as other needs the story should cover to appeal to them.

The answer is often found in one of the buyer personas that have been constructed as part of your larger marketing strategy. This can include anything from new leads generated by the marketing team to long-term customers that are being pressed for cross-sell opportunities. In all of these cases, demonstrating value through a relatable customer success story can be part of the solution to conversion.

2. Choose your client or subject

Who you highlight matters. Case studies tie brands together that might otherwise not cross paths. A writer will want to ensure that the highlighted customer aligns with their own company’s brand identity and offerings. Look for a customer with positive name recognition who has had great success with a product or service and is willing to be an advocate.

The client should also match up with the identified target audience. Whichever company or individual is selected should be a reflection of other potential customers who can see themselves in similar circumstances, having the same problems and possible solutions.

Some of the most compelling case studies feature customers who:

• Switch from one product or service to another while naming competitors that missed the mark.
• Experience measurable results that are relatable to others in a specific industry.
• Represent well-known brands and recognizable names that are likely to compel action.
• Advocate for a product or service as a champion and are well-versed in its advantages.

Whoever or whatever customer is selected, marketers must ensure they have the permission of the company involved before getting started. Some brands have strict review and approval procedures for any official marketing or promotional materials that include their name. Acquiring those approvals in advance will prevent any miscommunication or wasted effort if there is an issue with their legal or compliance teams.

3. Conduct research and compile data

Substantiating the claims made in a case study — either by the marketing team or customers themselves — adds validity to the story. To do this, include data and feedback from the client that defines what success looks like. This can be anything from demonstrating return on investment (ROI) to a specific metric the customer was striving to improve. Case studies should prove how an outcome was achieved and show tangible results that indicate to the customer that your solution is the right one.

This step could also include customer interviews. Make sure that the people being interviewed are key stakeholders in the purchase decision or deployment and use of the product or service that is being highlighted. Content writers should work off a set list of questions prepared in advance. It can be helpful to share these with the interviewees beforehand so they have time to consider and craft their responses. One of the best interview tactics to keep in mind is to ask questions where yes and no are not natural answers. This way, your subject will provide more open-ended responses that produce more meaningful content.

4. Choose the right format

There are a number of different ways to format a case study. Depending on what you hope to achieve, one style will be better than another. However, there are some common elements to include, such as:

• An engaging headline
• A subject and customer introduction
• The unique challenge or challenges the customer faced
• The solution the customer used to solve the problem
• The results achieved
• Data and statistics to back up claims of success
• A strong call to action (CTA) to engage with the vendor

It’s also important to note that while case studies are traditionally written as stories, they don’t have to be in a written format. Some companies choose to get more creative with their case studies and produce multimedia content, depending on their audience and objectives. Case study formats can include traditional print stories, interactive web or social content, data-heavy infographics, professionally shot videos, podcasts, and more.

5. Write your case study

We’ll go into more detail later about how exactly to write a case study, including templates and examples. Generally speaking, though, there are a few things to keep in mind when writing your case study.

• Be clear and concise. Readers want to get to the point of the story quickly and easily, and they’ll be looking to see themselves reflected in the story right from the start.
• Provide a big picture. Always make sure to explain who the client is, their goals, and how they achieved success in a short introduction to engage the reader.
• Construct a clear narrative. Stick to the story from the perspective of the customer and what they needed to solve instead of just listing product features or benefits.
• Leverage graphics. Incorporating infographics, charts, and sidebars can be a more engaging and eye-catching way to share key statistics and data in readable ways.
• Offer the right amount of detail. Most case studies are one or two pages with clear sections that a reader can skim to find the information most important to them.
• Include data to support claims. Show real results — both facts and figures and customer quotes — to demonstrate credibility and prove the solution works.

6. Promote your story

Marketers have a number of options for distribution of a freshly minted case study. Many brands choose to publish case studies on their website and post them on social media. This can help support SEO and organic content strategies while also boosting company credibility and trust as visitors see that other businesses have used the product or service.

Marketers are always looking for quality content they can use for lead generation. Consider offering a case study as gated content behind a form on a landing page or as an offer in an email message. One great way to do this is to summarize the content and tease the full story available for download after the user takes an action.

Sales teams can also leverage case studies, so be sure they are aware that the assets exist once they’re published. Especially when it comes to larger B2B sales, companies often ask for examples of similar customer challenges that have been solved.

Now that you’ve learned a bit about case studies and what they should include, you may be wondering how to start creating great customer story content. Here are a couple of templates you can use to structure your case study.

Template 1 — Challenge-solution-result format

• Start with an engaging title. This should be fewer than 70 characters long for SEO best practices. One of the best ways to approach the title is to include the customer’s name and a hint at the challenge they overcame in the end.
• Create an introduction. Lead with an explanation as to who the customer is, the need they had, and the opportunity they found with a specific product or solution. Writers can also suggest the success the customer experienced with the solution they chose.
• Present the challenge. This should be several paragraphs long and explain the problem the customer faced and the issues they were trying to solve. Details should tie into the company’s products and services naturally. This section needs to be the most relatable to the reader so they can picture themselves in a similar situation.
• Share the solution. Explain which product or service offered was the ideal fit for the customer and why. Feel free to delve into their experience setting up, purchasing, and onboarding the solution.
• Explain the results. Demonstrate the impact of the solution they chose by backing up their positive experience with data. Fill in with customer quotes and tangible, measurable results that show the effect of their choice.
• Ask for action. Include a CTA at the end of the case study that invites readers to reach out for more information, try a demo, or learn more — to nurture them further in the marketing pipeline. What you ask of the reader should tie directly into the goals that were established for the case study in the first place.

Template 2 — Data-driven format

• Start with an engaging title. Be sure to include a statistic or data point in the first 70 characters. Again, it’s best to include the customer’s name as part of the title.
• Create an overview. Share the customer’s background and a short version of the challenge they faced. Present the reason a particular product or service was chosen, and feel free to include quotes from the customer about their selection process.
• Present data point 1. Isolate the first metric that the customer used to define success and explain how the product or solution helped to achieve this goal. Provide data points and quotes to substantiate the claim that success was achieved.
• Present data point 2. Isolate the second metric that the customer used to define success and explain what the product or solution did to achieve this goal. Provide data points and quotes to substantiate the claim that success was achieved.
• Present data point 3. Isolate the final metric that the customer used to define success and explain what the product or solution did to achieve this goal. Provide data points and quotes to substantiate the claim that success was achieved.
• Summarize the results. Reiterate the fact that the customer was able to achieve success thanks to a specific product or service. Include quotes and statements that reflect customer satisfaction and suggest they plan to continue using the solution.
• Ask for action. Include a CTA at the end of the case study that asks readers to reach out for more information, try a demo, or learn more — to further nurture them in the marketing pipeline. Again, remember that this is where marketers can look to convert their content into action with the customer.

While templates are helpful, seeing a case study in action can also be a great way to learn. Here are some examples of how Adobe customers have experienced success.

Juniper Networks

One example is the Adobe and Juniper Networks case study , which puts the reader in the customer’s shoes. The beginning of the story quickly orients the reader so that they know exactly who the article is about and what they were trying to achieve. Solutions are outlined in a way that shows Adobe Experience Manager is the best choice and a natural fit for the customer. Along the way, quotes from the client are incorporated to help add validity to the statements. The results in the case study are conveyed with clear evidence of scale and volume using tangible data.

The story of Lenovo’s journey with Adobe is one that spans years of planning, implementation, and rollout. The Lenovo case study does a great job of consolidating all of this into a relatable journey that other enterprise organizations can see themselves taking, despite the project size. This case study also features descriptive headers and compelling visual elements that engage the reader and strengthen the content.

Tata Consulting

When it comes to using data to show customer results, this case study does an excellent job of conveying details and numbers in an easy-to-digest manner. Bullet points at the start break up the content while also helping the reader understand exactly what the case study will be about. Tata Consulting used Adobe to deliver elevated, engaging content experiences for a large telecommunications client of its own — an objective that’s relatable for a lot of companies.

Case studies are a vital tool for any marketing team as they enable you to demonstrate the value of your company’s products and services to others. They help marketers do their job and add credibility to a brand trying to promote its solutions by using the experiences and stories of real customers.

When you’re ready to get started with a case study:

• Think about a few goals you’d like to accomplish with your content.
• Make a list of successful clients that would be strong candidates for a case study.
• Reach out to the client to get their approval and conduct an interview.
• Gather the data to present an engaging and effective customer story.

Adobe can help

There are several Adobe products that can help you craft compelling case studies. Adobe Experience Platform helps you collect data and deliver great customer experiences across every channel. Once you’ve created your case studies, Experience Platform will help you deliver the right information to the right customer at the right time for maximum impact.

To learn more, watch the Adobe Experience Platform story .

Keep in mind that the best case studies are backed by data. That’s where Adobe Real-Time Customer Data Platform and Adobe Analytics come into play. With Real-Time CDP, you can gather the data you need to build a great case study and target specific customers to deliver the content to the right audience at the perfect moment.

Watch the Real-Time CDP overview video to learn more.

Finally, Adobe Analytics turns real-time data into real-time insights. It helps your business collect and synthesize data from multiple platforms to make more informed decisions and create the best case study possible.

Request a demo to learn more about Adobe Analytics.

https://business.adobe.com/blog/perspectives/b2b-ecommerce-10-case-studies-inspire-you

https://business.adobe.com/blog/basics/business-case

https://business.adobe.com/blog/basics/what-is-real-time-analytics

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What Is a Case Study and Why You Should Use Them

Case studies can provide more insights into your business while helping you conduct further research with robust qualitative data analysis to learn more.

If you're in charge of running a company, then you're likely always looking for new ways to run your business more efficiently and increase your customer base while streamlining as many processes as possible.

Unfortunately, it can sometimes be difficult to determine how to go about implementing the proper program in order to be successful. This is why many business owners opt to conduct a case study, which can help significantly. Whether you've been struggling with brand consistency or some other problem, the right case study can identify why your problem exists as well as provide a way to rectify it.

A case study is a great tool that many businesses aren't even aware exists, and there are marketing experts like Mailchimp who can provide you with step-by-step assistance with implementing a plan with a case study. Many companies discover that not only do they need to start a blog in order to improve business, but they also need to create specific and relevant blog titles.

If your company already has a blog, then optimizing your blog posts may be helpful. Regardless of the obstacles that are preventing you from achieving all your professional goals, a case study can work wonders in helping you reverse this issue.

What is a case study?

A case study is a comprehensive report of the results of theory testing or examining emerging themes of a business in real life context. Case studies are also often used in the healthcare industry, conducting health services research with primary research interest around routinely collected healthcare data.

However, for businesses, the purpose of a case study is to help small business owners or company leaders identify the issues and conduct further research into what may be preventing success through information collection, client or customer interviews, and in-depth data analysis.

Knowing the case study definition is crucial for any business owner. By identifying the issues that are hindering a company from achieving all its goals, it's easier to make the necessary corrections to promote success through influenced data collection.

Why are case studies important?

Now that we've answered the questions, "what is a case study?" Why are case studies important? Some of the top reasons why case studies are important include:

• Understand complex issues: Even after you conduct a significant amount of market research , you might have a difficult time understanding exactly what it means. While you might have the basics down, conducting a case study can help you see how that information is applied. Then, when you see how the information can make a difference in business decisions, it could make it easier to understand complex issues.
• Collect data: A case study can also help with data tracking . A case study is a data collection method that can help you describe the information that you have available to you. Then, you can present that information in a way the reader can understand.
• Conduct evaluations: As you learn more about how to write a case study, remember that you can also use a case study to conduct evaluations of a specific situation. A case study is a great way to learn more about complex situations, and you can evaluate how various people responded in that situation. By conducting a case study evaluation, you can learn more about what has worked well, what has not, and what you might want to change in the future.
• Identify potential solutions: A case study can also help you identify solutions to potential problems. If you have an issue in your business that you are trying to solve, you may be able to take a look at a case study where someone has dealt with a similar situation in the past. For example, you may uncover data bias in a specific solution that you would like to address when you tackle the issue on your own. If you need help solving a difficult problem, a case study may be able to help you.

Remember that you can also use case studies to target your audience . If you want to show your audience that you have a significant level of expertise in a field, you may want to publish some case studies that you have handled in the past. Then, when your audience sees that you have had success in a specific area, they may be more likely to provide you with their business. In essence, case studies can be looked at as the original method of social proof, showcasing exactly how you can help someone solve their problems.

What are the benefits of writing a business case study?

Although writing a case study can seem like a tedious task, there are many benefits to conducting one through an in depth qualitative research process.

• Industry understanding: First of all, a case study can give you an in-depth understanding of your industry through a particular conceptual framework and help you identify hidden problems that are preventing you from transcending into the business world.
• Develop theories: If you decide to write a business case study, it provides you with an opportunity to develop new theories. You might have a theory about how to solve a specific problem, but you need to write a business case study to see exactly how that theory has unfolded in the past. Then, you can figure out if you want to apply your theory to a similar issue in the future.
• Evaluate interventions: When you write a business case study that focuses on a specific situation you have been through in the past, you can uncover whether that intervention was truly helpful. This can make it easier to figure out whether you want to use the same intervention in a similar situation in the future.
• Identify best practices: If you want to stay on top of the best practices in your field, conducting case studies can help by allowing you to identify patterns and trends and develop a new list of best practices that you can follow in the future.
• Versatility: Writing a case study also provides you with more versatility. If you want to expand your business applications, you need to figure out how you respond to various problems. When you run a business case study, you open the door to new opportunities, new applications, and new techniques that could help you make a difference in your business down the road.
• Solve problems: Writing a great case study can dramatically improve your chances of reversing your problem and improving your business.
• These are just a few of the biggest benefits you might experience if you decide to publish your case studies. They can be an effective tool for learning, showcasing your talents, and teaching some of your other employees. If you want to grow your audience , you may want to consider publishing some case studies.

What are the limitations of case studies?

Case studies can be a wonderful tool for any business of any size to use to gain an in-depth understanding of their clients, products, customers, or services, but there are limitations.

One limitation of case studies is the fact that, unless there are other recently published examples, there is nothing to compare them to since, most of the time, you are conducting a single, not multiple, case studies.

Another limitation is the fact that most case studies can lack scientific evidence.

Types of case studies

There are specific types of case studies to choose from, and each specific type will yield different results. Some case study types even overlap, which is sometimes more favorable, as they provide even more pertinent data.

Here are overviews of the different types of case studies, each with its own theoretical framework, so you can determine which type would be most effective for helping you meet your goals.

Explanatory case studies

Explanatory case studies are pretty straightforward, as they're not difficult to interpret. This type of case study is best if there aren't many variables involved because explanatory case studies can easily answer questions like "how" and "why" through theory development.

Exploratory case studies

An exploratory case study does exactly what its name implies: it goes into specific detail about the topic at hand in a natural, real-life context with qualitative research.

The benefits of exploratory case studies are limitless, with the main one being that it offers a great deal of flexibility. Having flexibility when writing a case study is important because you can't always predict what obstacles might arise during the qualitative research process.

Collective case studies

Collective case studies require you to study many different individuals in order to obtain usable data.

Case studies that involve an investigation of people will involve many different variables, all of which can't be predicted. Despite this fact, there are many benefits of collective case studies, including the fact that it allows an ongoing analysis of the data collected.

Intrinsic case studies

This type of study differs from the others as it focuses on the inquiry of one specific instance among many possibilities.

Many people prefer these types of case studies because it allows them to learn about the particular instance that they wish to investigate further.

Instrumental case studies

An instrumental case study is similar to an intrinsic one, as it focuses on a particular instance, whether it's a person, organization, or something different.

One thing that differentiates instrumental case studies from intrinsic ones is the fact that instrumental case studies aren't chosen merely because a person is interested in learning about a specific instance.

Tips for writing a case study

If you have decided to write case studies for your company, then you may be unsure of where to start or which type to conduct.

However, it doesn't have to be difficult or confusing to begin conducting a case study that will help you identify ways to improve your business.

Here are some helpful tips for writing your case studies:

1. Your case study must be written in the proper format

When writing a case study, the format that you should be similar to this:

Administrative summary

The executive summary is an overview of what your report will contain, written in a concise manner while providing real-life context.

Despite the fact that the executive summary should appear at the beginning of your case studies, it shouldn't be written until you've completed the entire report because if you write it before you finish the report, this summary may not be completely accurate.

Key problem statement

In this section of your case study, you will briefly describe the problem that you hope to solve by conducting the study. You will have the opportunity to elaborate on the problem that you're focusing on as you get into the breadth of the report.

Problem exploration

This part of the case study isn't as brief as the other two, and it goes into more detail about the problem at hand. Your problem exploration must include why the identified problem needs to be solved as well as the urgency of solving it.

Additionally, it must include justification for conducting the problem-solving, as the benefits must outweigh the efforts and costs.

Proposed resolution

This case study section will also be lengthier than the first two. It must include how you propose going about rectifying the problem. The "recommended solution" section must also include potential obstacles that you might experience, as well as how these will be managed.

Furthermore, you will need to list alternative solutions and explain the reason the chosen solution is best. Charts can enhance your report and make it easier to read, and provide as much proof to substantiate your claim as possible.

Overview of monetary consideration

An overview of monetary consideration is essential for all case studies, as it will be used to convince all involved parties why your project should be funded. You must successfully convince them that the cost is worth the investment it will require. It's important that you stress the necessity for this particular case study and explain the expected outcome.

Execution timeline

In the execution times of case studies, you explain how long you predict it will take to implement your study. The shorter the time it will take to implement your plan, the more apt it is to be approved. However, be sure to provide a reasonable timeline, taking into consideration any additional time that might be needed due to obstacles.

Always include a conclusion in your case study. This is where you will briefly wrap up your entire proposal, stressing the benefits of completing the data collection and data analysis in order to rectify your problem.

2. Make it clear and comprehensive

You want to write your case studies with as much clarity as possible so that every aspect of the report is understood. Be sure to double-check your grammar, spelling, punctuation, and more, as you don't want to submit a poorly-written document.

Not only would a poorly-written case study fail to prove that what you are trying to achieve is important, but it would also increase the chances that your report will be tossed aside and not taken seriously.

3. Don't rush through the process

Writing the perfect case study takes time and patience. Rushing could result in your forgetting to include information that is crucial to your entire study. Don't waste your time creating a study that simply isn't ready. Take the necessary time to perform all the research necessary to write the best case study possible.

Depending on the case study, conducting case study research could mean using qualitative methods, quantitative methods, or both. Qualitative research questions focus on non-numerical data, such as how people feel, their beliefs, their experiences, and so on.

Meanwhile, quantitative research questions focus on numerical or statistical data collection to explain causal links or get an in-depth picture.

It is also important to collect insightful and constructive feedback. This will help you better understand the outcome as well as any changes you need to make to future case studies. Consider using formal and informal ways to collect feedback to ensure that you get a range of opinions and perspectives.

4. Be confident in your theory development

While writing your case study or conducting your formal experimental investigation, you should have confidence in yourself and what you're proposing in your report. If you took the time to gather all the pertinent data collected to complete the report, don't second-guess yourself or doubt your abilities. If you believe your report will be amazing, then it likely will be.

5. Case studies and all qualitative research are long

It's expected that multiple case studies are going to be incredibly boring, and there is no way around this. However, it doesn't mean you can choose your language carefully in order to keep your audience as engaged as possible.

If your audience loses interest in your case study at the beginning, for whatever reason, then this increases the likelihood that your case study will not be funded.

Case study examples

If you want to learn more about how to write a case study, it might be beneficial to take a look at a few case study examples. Below are a few interesting case study examples you may want to take a closer look at.

• Phineas Gage by John Martin Marlow : One of the most famous case studies comes from the medical field, and it is about the story of Phineas Gage, a man who had a railroad spike driven through his head in 1848. As he was working on a railroad, an explosive charge went off prematurely, sending a railroad rod through his head. Even though he survived this incident, he lost his left eye. However, Phineas Gage was studied extensively over the years because his experiences had a significant, lasting impact on his personality. This served as a case study because his injury showed different parts of the brain have different functions.
• Kitty Genovese and the bystander effect : This is a tragic case study that discusses the murder of Kitty Genovese, a woman attacked and murdered in Queens, New York City. Shockingly, while numerous neighbors watched the scene, nobody called for help because they assumed someone else would. This case study helped to define the bystander effect, which is when a person fails to intervene during an emergency because other people are around.
• Henry Molaison and the study of memory : Henry Molaison lost his memory and suffered from debilitating amnesia. He suffered from childhood epilepsy, and medical professionals attempted to remove the part of his brain that was causing his seizures. He had a portion of his brain removed, but it completely took away his ability to hold memories. Even though he went on to live until the age of 82, he was always forced to live in the present moment, as he was completely unable to form new memories.

Case study FAQs

When should you do a case study.

There are several scenarios when conducting a case study can be beneficial. Case studies are often used when there's a "why" or "how" question that needs to be answered. Case studies are also beneficial when trying to understand a complex phenomenon, there's limited research on a topic, or when you're looking for practical solutions to a problem.

How can case study results be used to make business decisions?

You can use the results from a case study to make future business decisions if you find yourself in a similar situation. As you assess the results of a case study, you can identify best practices, evaluate the effectiveness of an intervention, generate new and creative ideas, or get a better understanding of customer needs.

How are case studies different from other research methodologies?

When compared to other research methodologies, such as experimental or qualitative research methodology, a case study does not require a representative sample. For example, if you are performing quantitative research, you have a lot of subjects that expand your sample size. If you are performing experimental research, you may have a random sample in front of you. A case study is usually designed to deliberately focus on unusual situations, which allows it to shed new light on a specific business research problem.

Writing multiple case studies for your business

If you're feeling overwhelmed by the idea of writing a case study and it seems completely foreign, then you aren't alone. Writing a case study for a business is a very big deal, but fortunately, there is help available because an example of a case study doesn't always help.

Mailchimp, a well-known marketing company that provides comprehensive marketing support for all sorts of businesses, can assist you with your case study, or you can review one of their own recently published examples.

Mailchimp can assist you with developing the most effective content strategy to increase your chances of being as successful as possible. Mailchimp's content studio is a great tool that can help your business immensely.

Top 40 Most Popular Case Studies of 2021

Two cases about Hertz claimed top spots in 2021's Top 40 Most Popular Case Studies

Two cases on the uses of debt and equity at Hertz claimed top spots in the CRDT’s (Case Research and Development Team) 2021 top 40 review of cases.

Hertz (A) took the top spot. The case details the financial structure of the rental car company through the end of 2019. Hertz (B), which ranked third in CRDT’s list, describes the company’s struggles during the early part of the COVID pandemic and its eventual need to enter Chapter 11 bankruptcy. 

The success of the Hertz cases was unprecedented for the top 40 list. Usually, cases take a number of years to gain popularity, but the Hertz cases claimed top spots in their first year of release. Hertz (A) also became the first ‘cooked’ case to top the annual review, as all of the other winners had been web-based ‘raw’ cases.

Besides introducing students to the complicated financing required to maintain an enormous fleet of cars, the Hertz cases also expanded the diversity of case protagonists. Kathyrn Marinello was the CEO of Hertz during this period and the CFO, Jamere Jackson is black.

Sandwiched between the two Hertz cases, Coffee 2016, a perennial best seller, finished second. “Glory, Glory, Man United!” a case about an English football team’s IPO made a surprise move to number four.  Cases on search fund boards, the future of malls,  Norway’s Sovereign Wealth fund, Prodigy Finance, the Mayo Clinic, and Cadbury rounded out the top ten.

Other year-end data for 2021 showed:

• Online “raw” case usage remained steady as compared to 2020 with over 35K users from 170 countries and all 50 U.S. states interacting with 196 cases.
• Fifty four percent of raw case users came from outside the U.S..
• The Yale School of Management (SOM) case study directory pages received over 160K page views from 177 countries with approximately a third originating in India followed by the U.S. and the Philippines.
• Twenty-six of the cases in the list are raw cases.
• A third of the cases feature a woman protagonist.
• Orders for Yale SOM case studies increased by almost 50% compared to 2020.
• The top 40 cases were supervised by 19 different Yale SOM faculty members, several supervising multiple cases.

CRDT compiled the Top 40 list by combining data from its case store, Google Analytics, and other measures of interest and adoption.

All of this year’s Top 40 cases are available for purchase from the Yale Management Media store .

And the Top 40 cases studies of 2021 are:

1.   Hertz Global Holdings (A): Uses of Debt and Equity

2.   Coffee 2016

3.   Hertz Global Holdings (B): Uses of Debt and Equity 2020

4.   Glory, Glory Man United!

5.   Search Fund Company Boards: How CEOs Can Build Boards to Help Them Thrive

6.   The Future of Malls: Was Decline Inevitable?

7.   Strategy for Norway's Pension Fund Global

8.   Prodigy Finance

9.   Design at Mayo

10. Cadbury

11. City Hospital Emergency Room

13. Volkswagen

14. Marina Bay Sands

15. Shake Shack IPO

16. Mastercard

17. Netflix

18. Ant Financial

19. AXA: Creating the New CR Metrics

20. IBM Corporate Service Corps

21. Business Leadership in South Africa's 1994 Reforms

22. Alternative Meat Industry

23. Children's Premier

24. Khalil Tawil and Umi (A)

25. Palm Oil 2016

26. Teach For All: Designing a Global Network

27. What's Next? Search Fund Entrepreneurs Reflect on Life After Exit

28. Searching for a Search Fund Structure: A Student Takes a Tour of Various Options

30. Project Sammaan

31. Commonfund ESG

32. Polaroid

33. Connecticut Green Bank 2018: After the Raid

34. FieldFresh Foods

35. The Alibaba Group

36. 360 State Street: Real Options

37. Herman Miller

38. AgBiome

39. Nathan Cummings Foundation

40. Toyota 2010

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When and How to Use a Case Study for Research

May 17, 2021 (Updated: May 4, 2023)

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What Is Case Study Research?

Types of case studies, when should you use a case study, case study benefits, case study limitations, how to write a case study.

Imagine your company receives a string of negative reviews online. You notice a few common themes among the complaints, but you still aren’t quite sure what went wrong. Or suppose an old blog post suddenly went viral, and you’d like to know why and how to do it again. In both of these situations, a case study could be the best way to find answers.

A case study is a process whereby researchers examine a specific subject in a thorough, detailed way. The subject of a case study could be an individual, a group, a community, a business, an organization, an event, or a phenomenon. Regardless of the type of subject, case studies are in-depth investigations designed to identify patterns and cause-and-effect relationships. Case studies are often used by researchers in the field of psychology , medicine, business, social work, anthropology, education, or political science.

Because they are singular in their focus and often rely on qualitative data, case studies tend to be highly subjective. The results of a single case study cannot always be generalized and applied to the larger population. However, case studies can be valuable tools for developing a thesis or illustrating a principle. They can help researchers understand, describe, compare, and evaluate different aspects of an issue or question.

Image via Flickr by plings

Case studies can be classified according to their purpose or their subject. For instance, a case study can focus on any of the following:

• A person:  Some case studies focus on one particular person. Often, the subject will be an individual with some rare characteristic or experience.
• A group:  Group case studies could look at a family, a group of coworkers, or a friend group. It could be people thrown together by circumstance or who share some bond or relationship. A group case study could even focus on an entire community of people.
• An organization:  An organizational case study could focus on a business, a nonprofit, an institution, or any other formal entity. The study could look at the people in the organization, the processes they use, or an incident at the organization.
• A location:  An event case study focuses on a specific area. It could be used to study environmental and population changes or to examine how people use the location.
• An event:  Event case studies can be used to cover anything from a natural disaster to a political scandal. Often, these case studies are conducted retrospectively, as an investigation into a past event.

In addition to different types of subjects, case studies often have different designs or purposes. Here are a few of the most common types of case studies:

• Explanatory:  An explanatory case study tries to explain the why or how behind something. This type of case study works well when studying an event or phenomenon, like an airplane crash or unexpected power outage.
• Descriptive:  A descriptive, or illustrative, case study is designed to shed light on an unfamiliar subject. Case studies like this provide in-depth, real-world examples of whatever the researcher wants to help the audience understand. For instance, a descriptive case study could focus on the experience of a mother with postpartum depression or on a young adult who has aged out of the foster care system.
• Exploratory:  An exploratory case study, or pilot case study, often serves as the first step in a larger research project. Researchers may use a case study to help them narrow their focus, draft a specific research question, and guide the parameters of a formal, large-scale study.
• Intrinsic:  An intrinsic case study has no goal beyond a deeper understanding of its subject. In this type of study, researchers are not trying to make generalized conclusions, challenge existing assumptions, or make any compare-and-contrast connections. The most interesting thing about the study is the subject itself.
• Critical Instance:  A critical instance case study is similar to an explanatory or intrinsic study. Like an intrinsic study, it may have no predetermined purpose beyond investigating the subject. Like an explanatory study, it may be used to explain a cause-and-effect relationship. A critical instance case study may also be used to call into question a commonly held assumption or popular theory.
• Instrumental:  An instrumental case study is the opposite of an intrinsic study because it serves a purpose beyond understanding the immediate subject. In this type of study, researchers explore a larger question through an individual case or cases. For instance, researchers could use a handful of case studies to investigate the relationship between social media use and happiness.
• Cumulative:  A cumulative, or collective, case study uses information from several past studies as the basis for a new study. Because it takes into account multiple case studies, a cumulative study allows for greater generalization than a single case study. It can also be a more time- and cost-effective option since it makes use of existing research.

Case studies are often used in the exploratory phase of research to gather qualitative data. They can also be used to create, support, or refute a hypothesis and guide future research. For instance, a marketing professional might conduct a case study to discover why a viral ad campaign was so successful . They can then take any lessons they glean from the case study and apply them to future marketing efforts. A psychologist could use a case study to form a theory about the best way to treat a specific disorder. That theory could then be tested later through a large-scale controlled study.

Case studies are a good way to explore a real-world topic in-depth, illustrate a point, discuss the implications or meaning of an event, or compare the experiences of different individuals. A trainer may use a case study to bring to life what would otherwise be an abstract series of recommended action steps or to spark a conversation about how to respond in a specific scenario. Similarly, professors can use case studies to highlight key concepts from a lecture and pose questions to test students’ understanding of the material.

In some situations, case studies are the only way to compile quantitative data in an ethical manner. For instance, many of the recommendations that doctors make regarding what is or is not safe during pregnancy are based on case studies. It wouldn’t be ethical to conduct a controlled study that exposes pregnant women to potentially harmful substances, so doctors rely on the anecdotal evidence provided by case studies to find correlations and draw their conclusions.

Case studies can also be used to gather data that would be otherwise impossible or impractical to obtain. Students often use case studies for their thesis or dissertation when they lack the time or resources to conduct large-scale research. Zoologists might use existing case studies to determine the success rate of reintroducing rehabilitated animals into the wild. A historian could use case studies to explore the strategies used by dictators to gain and maintain power.

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Case studies can be used on their own or as a complement to other research methods, depending on the situation. The examples above are just a few instances where case studies can be useful. Case studies also work well for the following:

Providing Insight Through Qualitative Data

Case studies generally provide more qualitative data as opposed to quantitative data , and that makes them an invaluable tool for gathering insight into complex topics. Psychologists, for instance, use case studies to better understand human behavior. Crafting theories on the motives behind human actions would be difficult with quantitative data alone. The information gleaned through case studies may be subjective, but so is much of what makes us human. As individuals, we each have a unique blend of emotions, attitudes, opinions, motivations, and behaviors. Objective quantitative data is rarely the best way to identify and explain these nuances.

By their very nature, case studies allow more more intensive, in-depth study than other research methods. Rather than aiming for a large sample size, case studies follow a single subject. Often case studies are conducted over a longer period of time, and the narrow focus allows researchers to gather more detail than would be possible in a study of thousands of people. The information gleaned may not be representative of the broader population, but it does provide richer insight into the subject than other research methods.

Identifying Avenues for Future Research

Case studies are often used as the first step in a larger research project. The results of a case study cannot necessarily be generalized, but they can help researchers narrow their focus. For instance, researchers in the medical field might conduct a case study on a patient who survived an injury that typically proves fatal.

Over the course of the study, researchers may identify two or three ways in which this patient’s situation differed from others they have seen. Perhaps they identify something unique in the patient’s DNA or lifestyle choices or in the steps doctors took to treat the injury. Letting that information guide them, researchers could use other methods to deepen their understanding of those factors and perhaps develop new treatments or preventative recommendations.

Case studies can also be used in the fields of social work, politics, and anthropology to draw attention to a widespread problem and spur more research. A detailed narrative about one person’s experience will inspire more compassion than an academic paper filled with quantitative data. Stories often have a greater impact than statistics.

Challenging, Testing, or Developing Theories

Case studies can be particularly useful in the process of forming and testing theories. A case study may lead researchers to form a new theory or call into a question an existing one. They are an invaluable tool for identifying exceptions to a rule or disproving conventional wisdom.

For instance, a medical professional may write a case study about a patient who exhibited atypical symptoms to assert that the list of symptoms for a condition should be expanded. A psychologist could use a case study to determine whether the new treatment they devised for depression is effective, or to demonstrate that existing treatment methods are flawed. As the result of a case study, a marketing professional could suggest that consumers values have changed and that marketing best practices should be updated accordingly.

Enabling the Study of Unique Subjects

Some subjects would be impossible, impractical, or unethical to study through other research methods. This is true in the case of extremely rare phenomenon, many aspects of human behavior, and even some medical conditions.

Suppose a medical professional would like to gather more information about multiple-birth pregnancies with four or more fetuses. More information would be helpful because we have less information about them, but the reason we have less information is because they are so rare. Conducting case studies of a few women who are currently pregnant with multiples or have given birth to multiples in the past may be the only practical way to research them.

Case studies can also be used to gain insight into historical events and natural phenomenon — things we are not able to repeat at will. Case studies have also been used to study subjects such as a feral child , child prodigies, rare psychological conditions, crisis response, and more.

Helping People Better Understand Nuanced Concepts

Educators incorporate case studies into their lectures for a reason. Walking students through a detailed case study can make the abstract seem more real and draw out the nuances of a concept. Case studies can facilitate engaging discussions, spark thoughtful questions, and give students a chance to apply what they have learned to real-world situations.

Outside the classroom, case studies can be used to illustrate complex ideas. For instance, a well-constructed case study can highlight the unintended consequences of a new piece of legislation or demonstrate that depression does not always manifest in an obvious way. Case studies can help readers and listeners understand and care about an issue that does not directly affect them.

Despite their benefits, case studies do come with a few limitations. Compared to other research methods, case studies are often at a disadvantage in terms of the following:

Replicability

In most cases, scientists strive to create experiments that can be repeated by others. That way, other scientists can perform their own research and compare their results to those of the initial study. Assuming these other scientists achieve similar results, the replicability of the experiment lends credibility to the findings and theories of the original researchers.

One limitation of case studies is that they are often difficult, if not impossible, to replicate. Although this fact does not diminish the value of case studies, it does demonstrate that case studies are not a good fit for every research problem — at least, not on their own. Additional research would have to be performed to corroborate the results and prove or disprove any generalized theories generated by a case study.

Generalization

Generalization is another area in which case studies cannot match other research methods. A case study can help us challenge existing theories and form new ones, but its results cannot necessarily be generalized. The data we gather from a case study is only valid for that specific subject, and we cannot assume that our conclusions apply to the broader population.

Researchers or readers can attempt to apply the principles from a particular case to similar situations or incorporate the results into a more comprehensive theory. However, a case study by itself can only prove the existence of certain possibilities and exceptions, not a general rule.

Reliability

The reliability of case studies may be called into question for two reasons. The first objection centers on the fallibility of human memory and the question of whether subjects are being honest. Many case studies rely on subjects to self-report biographical details, their state of mind, their thoughts and feelings, or their behaviors.

The second issue is the Hawthorne effect, which refers to the tendency of individuals to modify their behavior when they know they are being observed. This effect makes it nearly impossible for researchers to ensure that the observations and conclusions of their case study are reliable.

Researcher Bias

Researcher bias is another potential issue with case studies. The results of a case study are by nature subjective and qualitative rather than objective and qualitative, and any findings rely heavily on the observations and narrative provided by the researcher. Even the best researchers are still human, and no matter how hard they try to remain objective, they will not be able to keep their findings completely free of bias.

Researchers may have biases they are not even aware of. A researcher may over-identify with the subject and lose the benefit of a dispassionate outside perspective. If the researcher already has an opinion on the subject, they may subconsciously overlook or discount facts that contradict their pre-existing assumptions. Researcher bias can affect what the researcher observes and records, as well as how they interpret and apply their observations.

Case studies can be time-consuming and expensive to conduct. Crafting a thorough case study can be a lengthy project due to the intensive, detailed nature of this type of research. Plus, once the information has been gathered, it must be interpreted. Between the observation and analysis, a case study could take months or even years to complete. Researchers will need to be heavily involved in every step of the process, putting in a lot of time, energy, focus, and effort to ensure that the case study is as informative as possible.

Now that you understand the benefits, limitations, and types of case studies, you can follow these steps to write your own:

• Determine your objective.  Write out your research problem, question, or goal. If you aren’t sure, ask yourself questions like, “What am I trying to accomplish? What do I need to know? What will success look like?” Be clear and specific. Your answers will help you choose the right type of case study for your needs.
• Review the research.  Before delving into your case study, take some time to review the research that is already available. The information you gather during this preliminary research can help guide your efforts.
• Choose a subject.  Decide what or who the subject of your case study will be. For instance, if you are conducting a case study to find out how businesses have been affected by new CDC guidelines, you will need to choose a specific restaurant or retailer. In some cases, you may need to draft a release form for the subject to sign so that you will be able to publish your study.
• Gather information.  Case studies about a person, organization, or group may rely on questionnaires or interviews to gather information. If you are studying an event, you might use a combination of academic research and witness interviews. In some cases, you will record your own observations as part of the study.
• Write a report.  Most case studies culminate in a written report, similar to a research paper. Most case studies include five sections : an introduction, a literature review, an explanation of your methods, a discussion of your findings and the implications, followed by a conclusion.
• Publish your findings.  Once you’ve written your case study, consider the most engaging way to present your findings. A well-written research article is a good place to start, but going a step further will maximize the impact of your research. For instance, you could design an infographic to highlight key findings or commission an animated video to turn your case study into a visual narrative.

Whether research is your primary occupation or only an incidental part of your job, you can benefit from a solid understanding of what case studies are, how they work, and when to use them. Use the information and steps above to design and write a case study that will provide the answers you’re looking for.

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The Ultimate Showdown: Use Case vs. Case Study

Just like Marvel and DC superheroes, use cases and case studies both come armed with an impressive set of powers. But as with their comic book equivalents, they each come with different strengths. Sometimes saving the day calls for someone faster than a speeding bullet, other times you need a superhero with spidey-sense. It’s the same with use cases and case studies: different needs call for different approaches. 

A use case vs. case study — how will you know which to use in which situations? Let’s take a deep dive into the distinct powers of use cases and case studies then look at the scenarios that each are best suited to. I’ll share some effective formats to consider for each type of content and offer tips for each.

What’s the Difference Between Use Cases and Case Studies?

Before we dive in, let’s define our terms. A use case is written for a particular type of customer, such as buyer type (technical or strategic, for example) or industry. It describes how a solution solves challenges the buyer faces and helps them reach their goals. It paints the picture with a broad brush, encouraging prospects to envision how your product could meet their specific needs. 

A case study focuses on a single customer’s experience with your product or service. It describes quite specifically the challenges the customer needed to solve, how the customer implemented your solution, and exactly how they benefited as a result. A case study requires finer brushwork. It details how the customer deployed your product to solve a specific problem or set of problems. And it quantifies the results the customer achieved because of it.

Benefits of Use Cases

The power of use cases lies in their flexibility. They allow you to show how a particular type of user will get the most out of your product. Use cases give you the freedom to describe problems solved, benefits, and features for buyer types with different priorities. (For example, business leaders vs. technical users or organizations in different industries.) 

Unlike case studies, use cases don’t constrain you to describing how a specific client chose to use your product. Use cases let prospects fill in the details unique to them. They’re great for demonstrating how processes work, highlighting value for specific industries or roles, and showcasing increased efficiencies. 

Benefits of Case Studies

The case study’s twin powers are social proof and the ability to quantify results. When it comes to making purchase decisions, buyers want to hear the experiences others have had with a product. Case studies tell a unique story of a company’s experience with your product and how their investment turned out. 

Since you’re sharing an actual customer’s experience, the case study format allows you to go into more detail. You can include percent of cost savings or time savings, dollar amounts of new revenue brought in, etc. Being able to see the real-life application of your product and the results a real customer achieved is highly persuasive. 

Ideal Formats for Use Cases

You have many options for what your use case can look like. I’ve seen effective use cases take the form of multi-page documents or a single graphic. You’ll want to first identify what information you want to convey, then choose a format that’s well-suited to your purpose. Here are a few popular formats for use cases.

• White paper — White papers make an ideal medium for longer form use cases. If your intended readers are technical prospects, this format allows you to include lots of detailed information.
• One-pager — Single-page sell sheets are perfect for presenting a narrowly-defined use case. Since they’re so short, you can develop multiple one-pagers to target different product features and individual solutions. 
• Graphic — Many people are visual learners. For very-narrow use cases or high-level overviews, infographics give prospects a visual way to process the information.
• Video — A well-produced video gives you a host of options not easily included in a written format. Video use cases have the advantage of being able to show your solution in action. You can also share a bit about your company’s culture, or introduce key members of the product team to prospects. 

Ideal Formats for Case Studies

The core strength of the case study is its ability to tell an engaging story of how an actual company used your product to solve a problem or experience growth. These formats work particularly well when used to present a case study.

• Feature story — The feature story format makes the case study look like a magazine feature. It allows you to make full use of storytelling to weave a narrative. You’ll also include compelling statistics, direct quotes from the customer, and describe the pain they experienced before using your product.
• Q&A — Customer interviews that are heavily-infused with quotes providing specific details lend a feel of authenticity to a case study. The Q&A format also allows prospects to quickly scan and find the information that’s most compelling to them.
• Video — Video is like a chameleon. It blends in well with just about anything. When using video to present a case study, include an interview with the customer. You may also want to demo the product features that directly contributed to the client’s success. 

How to Write Better Use Cases

While use cases can take a variety of forms, these best practices will help boost their effectiveness.

• Describe the challenges and goals common to this type of buyer — Answer two key questions in your use cases: What kind of challenges are they facing in the day-to-day operations of their business? At the start of each day what goals are most important to them to accomplish?
• Make a direct connection between your product’s unique capabilities and the benefits your buyer will experience — If you’ve done your homework with defining your ICPs, you know what’s most important to your audience. Explicitly make the connection between what your product can accomplish and the benefits that matter most to that buyer type.
• Be a problem solver — Show how your solution solves the challenges common to the type of buyer and allows them to reach their goals. Highlight the impact of the status quo and demonstrate how your product effectively resolves the issues.
• Keep it simple — There’s no replacement for brevity. People are busy, and time is precious. A tightly-written use case is much more likely to be read than one that meanders. 
• Weave in story — Even though the use case doesn’t take a narrative format, weave in storytelling techniques as much as you can. It will make the use case easier for prospects to follow. 

How to Write Better Case Studies

Case studies are more engaging and convincing if you include these elements.  

• Tell a story, with your customer as the hero — Everyone loves a hero, except when it’s someone else. Avoid the urge to make your company the hero when writing case studies. Instead, focus on the client as the hero, emphasizing how they overcame a difficult problem and achieved great things with the aid of your solution. Your client is the hero. Your product is their secret weapon.
• Dig into the pain of the status quo — No one likes to feel pain, and everyone wants to avoid it. Be sure you have a thorough understanding of the pain involved in your customer’s situation prior to your solution. And show all the facets of that pain.
• Tie your product’s specific solutions to the pain points — Define the pain points, and show how your solution resolved them. Clearly connect your product’s capabilities with how the client achieved their goals.
• Quantify the cost of “before” and the value of “after” — Stating hard numbers in a case study makes it more believable. And it also gives prospects ammunition for justifying their choice and getting budget. Include stats like dollar amount or percentage of savings, dollar amount or percentage of new revenue, amount of time saved and what was able to be done with the saved time, and improved employee happiness (leading to improved retention rates and performance).
• Include candid quotes — Quotes add a layer of authenticity to a case study. As you’re interviewing your client for the case study, jot down direct quotes. Look for how they capture the essence of their presenting problem, how your product has improved an aspect of their business, and how easy it was to integrate your solution into their business. 

For more on how to craft a compelling customer story, check out How to Write Customer Stories that Sell .

The use case vs. case study debate.

So which one wins in the use case vs. case study debate? They both do. Use cases and case studies are both powerful tools that can be called upon to demonstrate your product’s distinct benefits to prospects. A well-rounded marketing effort will include both. After all, sometimes saving the day requires the use of a cape and spider silk.

Put your case studies to work! Check out The Ultimate Guide to Using Case Studies in Your Marketing for 12 different ways to expand reach.

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Content Strategy Is Much More Than SEO

posted on FEBRUARY 4, 2022

Somehow, the term “content strategy” has become synonymous with SEO strategy. But SEO is only a tiny part of content strategy. Without getting the rest right, traffic may be plentiful but demo requests will be few (and the requests that do come through probably won’t be from best-fit prospects).

Let’s look at four crucial components of content strategy to see exactly why this distinction matters.

If a company’s content looks and sounds like everything else online, no one is going to sit up and take notice. Sure, prospects might find the answer to a question they were Googling, but they won’t remember the brand associated with the insight, and they won’t be highly motivated to share it. 

To make ideal-fit prospects love your brand, you need standout points of view that are connected with what your prospects care about most. Your POVs could include a contrarian stance on the industry status quo, a commitment to fight against a  shared enemy , or an action-backed position on a social issue. 

If your POVs are truly aligned with your ideal-fit buyers and woven into your content strategically, they will not only differentiate your content from everyone else’s but also spark word-of-mouth. 

Value Prop Alignment

Effective content — even top-of-funnel content — will lead prospects to conclude that your solution is uniquely qualified to meet their needs. The way you structure your content and the points you make can create a clear connection between your value props and your prospects’ pain points and priorities. 

Where your brand POVs engage prospects on an emotional level, your value prop alignment engages prospects’ logical side and helps them to understand the ways your product will make their working lives better. 

Of course, this logical journey should be an enjoyable one for your prospects. There’s no need for content to be dry as you’re leading them down this path of thinking. But prospects must be taken on this thought journey to grasp why they should choose your solution over your competitors’.

Status Quo Risks

It’s easy to overlook the status quo as a killer of deals, but it often is exactly that. Buying a new solution is a risk — we’ve probably all experienced a nightmare rollout of software that was a bad fit. No one wants to be the person who championed that hated software (and worry about the impact to their career as a result!). To overcome this resistance, the risks of the status quo must outweigh the risk of buying a new solution in the minds of your ideal-fit prospects. 

A good content strategy will identify the risks involved in the ICP’s status quo and the specific impacts that it will have if it doesn’t change. Digging into the dangers involved in the status quo (when appropriate) in your content will help motivate prospects to take action.  

Channel Considerations

Finally, we get to channels — SEO, paid search, organic social, paid social, email, etc. Channel strategy includes pinpointing which channels ideal-fit prospects prefer for their work-related activities (i.e. sure, you can capture prospects’ attention when they’re trying to relax and forget about work, but it’s probably counter-productive). It also includes how to best approach each channel for maximum results.   

Content must, of course, get in front of prospects before it can engage them. Channel strategy is vitally important, but it’s not worth much without the prior three components. And SEO is only one channel! 

Take a Holistic View for Effective Content Strategy

Content strategy can’t be siloed from the rest of a marketing strategy — it should be just as driven by ICP research, positioning, brand messaging, and product messaging as everything else. Content can be incredibly powerful if it’s created and distributed with a holistic perspective. You can rank content high in search  and  generate high-quality demo requests at the same time.   

Schedule a call  to share what’s holding you back in your content marketing, and I’ll let you know if I can help and how. If I can’t help, I’ll recommend someone who can.

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21 UX case studies to learn from in 2024

UX case studies are the heart of your design portfolio. They offer a peek into your design process, showcasing how you tackle challenges, your methods, and your results. For recruiters, these case studies serve as a metric for evaluating your skills, problem-solving abilities, and talent.

If you’re considering creating your own UX case study in 2024 but don’t know where to start, you’re in the right place. This article aims to inspire you with 21 carefully hand-picked UX case study examples, each offering valuable lessons.

But before we dive into these examples, let’s address a question that might be lingering: Is a UX case study truly worth the effort?

Is it worth creating a UX case study?

The short answer is yes.

Remember how in math class, showing your workings was even more important than getting the correct answer? UX case studies are like that for designers. They are more than just showcasing the final product (the polished website or app); they detail the steps taken to get there (the research, user testing, and design iterations). By showing your design process, you give potential employers or clients a peek into your thought process and problem-solving skills.

A well-laid-out case study has many benefits, including the following:

Building credibility

As case studies provide evidence of your expertise and past successes, they can build credibility and trust with potential employers or clients.

Educational value

By showing your design process, you provide valuable insights and learnings for other designers and stakeholders.

Differentiation

A compelling case study can leave a lasting impression on potential recruiters and clients, helping you stand out.

Iterative improvement

A case study is like a roadmap of each project, detailing the highs, lows, failures, and successes. This information allows you to identify areas for improvement, learn from mistakes, and refine your approach in subsequent projects.

Now that you know why a stand-out case study is so important, let’s look at 21 examples to help you get creative. The case studies will fall under five categories:

• Language learning app
• Learning app
• Travel agency app
• Intelly healthcare app
• Cox Automotive
• Swiftwash laundry
• Wayfaro trip planner
• New York Times app redesign
• Disney+ app redesign
• Fitbit redesign
• Ryanair app redesign
• Forbes app redesign
• Enhancing virtual teaching with Google Meet
• Airbnb’s global check-in tool
• Spotify home shortcuts
• AI-powered spatial banking for Apple Vision Pro
• Sage Express

In this section, we’ll explore case studies that take us through the complete design journey of creating a digital product from scratch.

1. Language learning app

If you’re a designer looking to get your foot in the door, this is one case study you need to check out. It’s so well detailed that it helped this designer land their first role as a UX designer:

Created by Christina Sa, this case study tackles the all-too-common struggle of learning a new language through a mobile app. It takes us through the process of designing a nontraditional learning app that focuses on building a habit by teaching the Korean language using Korean media such as K-pop, K-drama, and K-webtoon.

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Key takeaway

This case study shows how a structured design process, user-centered approach, and effective communication can help you stand out. The creator meticulously laid out their design process from the exploratory research phase to the final prototype, even detailing how the case study changed their view on the importance of a design process.

If you’re searching for a comprehensive case study that details every step of the design process, look no further. This one is for you:

This impressive case study by Finna Wang explores the creation of a fan-focused responsive platform for Jambb, an already existing social platform. The creator starts by identifying the problem and then defines the project scope before diving into the design process.

This case study shows us the importance of an iterative problem-solving approach. It identifies a problem (pre-problem statement), creates a solution, tests the solution, and then revises the problem statement based on the new findings.

3. Learning app

If you need a highly visual case study that takes you through every step of the design process in an engaging way, this one is for you:

This case study walks us through the design of a platform where users can find experts to explain complex topics to them in a simple and friendly manner. It starts by defining the scope of work, then progresses through research, user journeys, information architecture, user flow, initial design, and user testing, before presenting the final solution.

This case study demonstrates effective ways to keep readers engaged while taking them through the steps of a design process. By incorporating illustrations and data visualization, the designer communicates complex information in an engaging manner, without boring the readers.

If you’re in search of a case study that details the design process but is also visually appealing, you should give this one a look:

This case study by Orbix Studio takes us through the process of designing GiveHub, a fundraising app that helps users set up campaigns for causes they’re passionate about. It starts with an overview of the design process, then moves on to identifying the challenges and proposing solutions, before showing us how the solutions are brought to life.

This case study illustrates how a visually engaging design and clear organization can make your presentation easy to grasp.

5. Travel agency app

This case study is quite popular on Behance, and it’s easy to see why:

The case study takes us through the process of creating a travel app that lets users compare travel packages from various travel agencies or groups. The creators set out a clear problem statement, propose a solution, and then show us the step-by-step implementation process. The incorporation of data visualization tools makes this case study easy to digest.

This is another case study that shows the importance of using a clearly defined design process. Going by its popularity on Behance, you can tell that the step-by-step process breakdown was well worth the effort.

6. Intelly healthcare app

If you’re looking for a UX case study that explores the design journey for both mobile and desktop versions of an app, this is one you should check out:

This case study explores the process of creating Intelly, an app that transforms patient care with telemedicine, prescription management, and real-time tracking. The case study begins with a clear design goal, followed by a layout of existing problems and design opportunities. The final design is a mobile app for patients and a desktop app for doctors.

This case study highlights the importance of proactive problem-solving and creative thinking in the design process. The creators laid out some key problems, identified design opportunities in them, and effectively leveraged them to create an app.

7. Cox Automotive

If you prefer a results-oriented case study, you’ll love this one:

This case study delves into how Cox Automotive’s Manheim division, used LogRocket to optimize their customers’ digital experience for remote car auctions. It starts by highlighting the three key outcomes before giving us an executive summary of the case study. The rest of the case study takes us through the process of achieving the highlighted outcomes.

A key takeaway from this case study is the significance of using user data and feedback to enhance the digital experience continuously. Cox Automotive used LogRocket to identify and address user-reported issues, gain insights into customer behaviors, and make data-driven decisions to optimize their product.

These case studies are more focused on the visual aspects of the design process, teaching us a thing or two about presentation and delivery.

If you love a case study that scores high on aesthetics with vivid colors, cool illustrations, and fun animations, you need to check this one out:

This case study takes us on a visual journey of creating Rebank, a digital product aimed at revolutionizing the baking industry. It starts with the research process, moves on to branding and style, and then takes us through the different screens, explaining what each one offers.

This case study illustrates the value of thinking outside the box. Breaking away from the conventional design style of financial products makes it a stand-out case study.

9. Swiftwash Laundry

If you’re looking for a case study that prioritizes aesthetics and visual appeal, you should check this one out:

This case study by Orbix Studio gives us a peek into how they created Swiftwash, a laundry service app. It takes us through the steps involved in creating an intuitive, user-friendly, and visually appealing interface.

If there’s one thing to take away from this case study, it’s the value of presenting information in a straightforward manner. Besides being easy on the eye, this case study is also easy to digest. The creators lay out the problem and detail the steps taken to achieve a solution, in an easy-to-follow way, while maintaining a high visual appeal.

10. Wayfaro trip planner

If you’re looking for a concise case study with clean visuals, you should definitely check this one out:

This Behance case study takes us through the design of Wayfaro, a trip planner app that allows users to plan their itineraries for upcoming journeys. The creators dive straight into the visual design process, showing us aspects such as branding and user flow, and explaining the various features on each screen.

This case study shows us the power of an attractive presentation. Not only is the mobile app design visually appealing, but the design process is presented in a sleek and stylish manner.

App redesign

These case studies delve into the redesign of existing apps, offering valuable insights into presentation techniques and problem-solving approaches.

11. New York Times app redesign

If you’re looking for an app redesign case study that’s impactful yet concise, this one is for you:

This study details the creation of “Timely,” a design feature to address issues with the NYT app such as irrelevant content, low usage, and undesirable coverage. It takes us through the process of identifying the problem, understanding audience needs, creating wireframes, and prototyping.

This case study shows us that you don’t always need to overhaul the existing app when redesigning. It suggests a solution that fits into the current information setup, adding custom graphics to the mobile app. Starting with a simple problem statement, it proposes a solution to address the app’s issues without changing what customers already enjoy.

12. Disney+ app redesign

If you’re looking for an engaging case study that’s light on information, you should check out this one:

This case study by Andre Carioca dives right into giving the user interface a little facelift to make it more fun and engaging. By employing compelling storytelling and appealing visuals, the creator crafts a narrative that’s a delight to read.

Given how popular this case study is on Behance, you can tell that the designer did something right. It shows how injecting a little playfulness can elevate your case study and make it more delightful.

13. Fitbit redesign

If you want an in-depth case study that doesn’t bore you to sleep, this one is for you:

This case study by Stacey Wang takes us through the process of redesigning Fitbit, a wearable fitness tracker. The creator starts by understanding personas and what users expect from a fitness tracker.

Next was the development of use cases and personas. Through a series of guerrilla tests, they were able to identify user pain points. The redesign was centered around addressing these pain points.

This case study highlights the importance of clear organization and strong visual communication. The creator goes in-depth into the intricacies of redesigning the Fitbit app, highlighting every step, without boring the readers.

14. Ryanair app redesign

If you’re bored of the usual static case studies and need something more interactive, this app redesign is what you’re looking for:

This case study takes us through the process of giving the Ryanair app a fresh look. Besides the clean aesthetics and straightforward presentation, the incorporation of playful language and interactive elements makes this case study captivating.

This case study shows how adding a bit of interactivity to your presentation can elevate your work.

15. Forbes app redesign

This case study starts by explaining why the redesign was needed and dives deep into analyzing the current app. The creator then takes us through the research and ideation phases and shares their proposed solution. After testing the solution, they made iterations based on the results.

When it comes to redesigning an existing product, it’s a good idea to make a strong case for why the redesign was needed in the first place.

UX research

These case studies are centered around UX research, highlighting key research insights to enhance your design process.

16. Enhancing virtual teaching with Google Meet

This case study by Amanda Rosenburg, Head of User Experience Research, Google Classroom shows us how listening to user feedback can help make our products more useful and inclusive to users.

To improve the virtual teaching experience on Google Meet, the team spent a lot of time getting feedback from teachers. They then incorporated this feedback into the product design, resulting in new functionality like attendance taking, hand raising, waiting rooms, and polls. Not only did these new features improve the user experience for teachers and students, but they also created a better user experience for all Google Meet users.

When there isn’t room for extensive user research and you need to make quick improvements to the user experience, it’s best to go straight to your users for feedback.

17. Airbnb’s global check-in tool

This case study by Vibha Bamba, Design Lead on Airbnb’s Host Success team, shows us how observing user behaviors inspired the creation of a global check-in tool:

By observing interactions between guests and hosts, the Airbnb team discovered a design opportunity. This led to the creation of visual check-in guides for Airbnb guests, which they can access both offline and online.

There’s a lot to be learned from observing user behavior. Don’t limit yourself to insights obtained from periodic research. Instead, observe how people interact with your product in their daily lives. The insights obtained from such observations can help unlock ingenious design opportunities.

18. Spotify Home Shortcuts

This case study by Nhi Ngo, a Senior User Researcher at Spotify shows us the importance of a human perspective in a data-driven world:

When the Spotify team set out to develop and launch the ML-powered Shortcuts feature on the home tab, they hit a brick wall with the naming. A/B tests came back inconclusive. In the end, they had to go with the product designer’s suggestion of giving the feature a name that would create a more human and personal experience for users.

This led to the creation of a humanistic product feature that evoked joy in Spotify’s users and led to the incorporation of more time-based features in the model, making the content more time-sensitive for users.

Although data-driven research is powerful, it doesn’t hold all the answers. So in your quest to uncover answers through research, never lose sight of the all-important human perspective.

Artificial intelligence

The following case studies are centered around the design of AI-powered products.

19. AI-powered spatial banking for Apple Vision Pro

If you want to be wowed by a futuristic case study that merges artificial intelligence with spatial banking, you should check this out:

In this revolutionary case study, UXDA designers offer a sneak peek into the future with a banking experience powered by AI. They unveil their vision of AI-powered spatial banking on the visionOS platform, showcasing its features and their AI use cases.

This case study shows us the importance of pushing boundaries to create innovative experiences that cater to user needs and preferences.

20. Sage Express

If what you need is an AI case study that isn’t information-dense, this one is for you:

This case study by Arounda takes us through the design of Sage Express, an AI-powered data discovery tool that automatically extracts patterns, tendencies, and insights from data. It outlines the challenge, proposes a solution, and details the journey of bringing the proposed solution to life. But it doesn’t stop there: it also shows the actual results of the design using tangible metrics.

This case study underscores the importance of showing your outcomes in tangible form. You’ve worked hard on a project, but what were the actual results?

If you’re looking for a clean and well-structured AI case study, this will be helpful:

This case study takes us through the process of creating Delfi, an AI-driven banking financial report system. It details the entire design process from onboarding to prototype creation.

If there’s one thing to learn from this case study, it’s how a well-structured presentation can simplify complex information. Although the case study is heavy on financial data, the organized layout not only enhances visual appeal but also aids comprehension.

This article has shown you 21 powerful case study examples across various niches, each providing valuable insights into the design process. These case studies demonstrate the importance of showcasing the design journey, not just the final polished product.

When creating your own case study, remember to walk your users through the design process, the challenges you faced, and your solutions. This gives potential recruiters and clients a glimpse of your creativity and problem-solving skills.

And finally, don’t forget to add that human touch. Let your personality shine through and don’t be afraid to inject a little playfulness and storytelling where appropriate. By doing so, you can craft a case study that leaves a lasting impression on your audience.

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Business process reengineering (BPR) is the radical redesign of core business processes to achieve dramatic improvements in performance, efficiency and effectiveness. BPR examples are not one-time projects, but rather examples of a continuous journey of innovation and change focused on optimizing end-to-end processes and eliminating redundancies. The purpose of BPR is to streamline  workflows , eliminate unnecessary steps and improve resource utilization.

BPR involves business process redesign that challenges norms and methods within an organization. It typically focuses on achieving dramatic, transformative changes to existing processes. It should not be confused with  business process management (BPM) , a more incremental approach to optimizing processes, or business process improvement (BPI), a broader term that encompasses any systematic effort to improve current processes. This blog outlines some BPR examples that benefit from a BPM methodology.

Background of business process reengineering

BPR emerged in the early 1990s as a management approach aimed at radically redesigning business operations to achieve business transformation. The methodology gained prominence with the publication of a 1990 article in the Harvard Business Review, “Reengineering Work: Don’t Automate, Obliterate,” by Michael Hammer, and the 1993 book by Hammer and James Champy, Reengineering the Corporation . An early case study of BPR was Ford Motor Company, which successfully implemented reengineering efforts in the 1990s to streamline its manufacturing processes and improve competitiveness.

Organizations of all sizes and industries implement business process reengineering. Step 1 is to define the goals of BPR, and subsequent steps include assessing the current state, identifying gaps and opportunities, and process mapping.

Successful implementation of BPR requires strong leadership, effective change management and a commitment to continuous improvement. Leaders, senior management, team members and stakeholders must champion the BPR initiative and provide the necessary resources, support and direction to enable new processes and meaningful change.

BPR examples: Use cases

Streamlining supply chain management.

Using BPR for supply chain optimization involves a meticulous reassessment and redesign of every step, including logistics, inventory management and procurement . A comprehensive supply chain overhaul might involve rethinking procurement strategies, implementing just-in-time inventory systems, optimizing production schedules or redesigning transportation and distribution networks. Technologies such as supply chain management software (SCM), enterprise resource planning (ERP) systems, and advanced analytics tools can be used to automate and optimize processes. For example, predictive analytics can be used to forecast demand and optimize inventory levels, while blockchain technology can enhance transparency and traceability in the supply chain.

• Improved efficiency
• Reduced cost
• Enhanced transparency

Customer relationship management (CRM)

BPR is a pivotal strategy for organizations that want to overhaul their customer relationship management (CRM) processes. Steps of business process reengineering for CRM include integrating customer data from disparate sources, using advanced analytics for insights, and optimizing service workflows to provide personalized experiences and shorter wait times.

BPR use cases for CRM might include:

• Implementing integrated CRM software to centralize customer data and enable real-time insights
• Adopting omnichannel communication strategies to provide seamless and consistent experiences across touchpoints
• Empowering frontline staff with training and resources to deliver exceptional service

Using BPR, companies can establish a comprehensive view of each customer, enabling anticipation of their needs, personalization of interactions and prompt issue resolution.

• 360-degree customer view
• Increased sales and retention
• Faster problem resolution

Digitizing administrative processes

Organizations are increasingly turning to BPR to digitize and automate administrative processes to reduce human errors. This transformation entails replacing manual, paper-based workflows with digital systems that use technologies like Robotic Process Automation (RPA) for routine tasks.

This might include streamlining payroll processes, digitizing HR operations or automating invoicing procedures. This can lead to can significant improvements in efficiency, accuracy and scalability and enable the organization to operate more effectively.

• Reduced processing times
• Reduced errors
• Increased adaptability

Improving product development processes

BPR plays a crucial role in optimizing product development processes, from ideation to market launch. This comprehensive overhaul involves evaluating and redesigning workflows, fostering cross-functional collaboration and innovating by using advanced technologies. This can involve implementing cross-functional teams to encourage communication and knowledge sharing, adopting agile methodologies to promote iterative development and rapid prototyping, and by using technology such as product lifecycle management (PLM) software to streamline documentation and version control.

BPR initiatives such as these enable organizations to reduce product development cycle times, respond more quickly to market demands, and deliver innovative products that meet customer needs.

• Faster time-to-market
• Enhanced innovation
• Higher product quality

Updating technology infrastructure

In an era of rapid technological advancement, BPR serves as a vital strategy for organizations that need to update and modernize their technology infrastructure. This transformation involves migrating to cloud-based solutions, adopting emerging technologies like artificial intelligence (AI) and machine learning (ML) , and integrating disparate systems for improved data management and analysis, which enables more informed decision making. Embracing new technologies helps organizations improve performance, cybersecurity and scalability and positioning themselves for long-term success.

• Enhanced performance
• Improved security
• Increased innovation

Reducing staff redundancy

In response to changing market dynamics and organizational needs, many companies turn to BPR to restructure their workforce and reduce redundancy. These strategic initiatives can involve streamlining organizational hierarchies, consolidating departments and outsourcing non-core functions. Optimizing workforce allocation and eliminating redundant roles allows organizations to reduce costs, enhance operational efficiency and focus resources on key priorities.

• Cost savings
• Increased efficiency
• Focus on core competencies

Cutting costs across operations

BPR is a powerful tool to systematically identify inefficiencies, redundancies and waste within business operations. This enables organizations to streamline processes and cut costs.

BPR focuses on redesigning processes to eliminate non-value-added activities, optimize resource allocation, and enhance operational efficiency. This might entail automating repetitive tasks, reorganizing workflows for minimizing bottlenecks, renegotiating contracts with suppliers to secure better terms, or by using technology to improve collaboration and communication. This can enable significant cost savings and improve profitability.

• Lower costs
• Enhanced competitiveness

Improving output quality

BPR can enhance the quality of output across various business processes, from manufacturing to service delivery. BPR initiatives generally boost key performance indicators (KPIs).

Steps for improving output quality involve implementing quality control measures, fostering a culture of continuous improvement, and using customer feedback and other metrics to drive innovation.

Technology can also be used to automate processes. When employees are freed from distracting processes, they can increase their focus on consistently delivering high-quality products and services. This builds customer trust and loyalty and supports the organization’s long-term success.

• Higher customer satisfaction
• Enhanced brand image

Human resource (HR) process optimization

BPR is crucial for optimizing human resources (HR) processes. Initiatives might include automating the onboarding process with easy-to-use portals, streamlining workflows, creating self-service portals and apps, using AI for talent acquisition , and implementing a data-driven approach to performance management.

Fostering employee engagement can also help attract, develop and retain top talent. Aligning HR processes with organizational goals and values can enhance workforce productivity, satisfaction and business performance.

• Faster recruitment cycles
• Improved employee engagement
• Strategic talent allocation

BPR examples: Case studies

The following case study examples demonstrate a mix of BPR methodologies and use cases working together to yield client benefits.

Bouygues becomes the AI standard bearer in French telecom

Bouygues Telecom , a leading French communications service provider, was plagued by legacy systems that struggled to keep up with an enormous volume of support calls. The result? Frustrated customers were left stranded in call lines and Bouygues at risk of being replaced by its competitors. Thankfully, Bouygues had partnered with IBM previously in one of our first pre- IBM watsonx™ AI deployments. This phase 1 engagement laid the groundwork perfectly for AI’s injection into the telecom’s call center during phase 2.

Today, Bouygues greets over 800,000 calls a month with IBM watsonx Assistant™, and IBM watsonx Orchestrate™ helps alleviate the repetitive tasks that agents previously had to handle manually, freeing them for higher-value work. In all, agents’ pre-and-post-call workloads were reduced by 30%. 1 In addition, 8 million customer-agent conversations—which were, in the past, only partially analyzed—have now been summarized with consistent accuracy for the creation of actionable insights.

Taken together, these technologies have made Bouygues a disruptor in the world of customer care, yielding a USD 5 million projected reduction in yearly operational costs and placing them at the forefront of AI technology. 1

Finance of America promotes lifetime loyalty via customer-centric transformation

By co-creating with IBM, mortgage lender Finance of America was able to recenter their operations around their customers, driving value for both them and the prospective home buyers they serve.

To accomplish this goal, FOA iterated quickly on both new strategies and features that would prioritize customer service and retention. From IBM-facilitated design thinking workshops came roadmaps for a consistent brand experience across channels, simplifying the work of their agents and streamlining the application process for their customers.

As a result of this transformation, FOA is projected to double their customer base in just three years. In the same time frame, they aim to increase revenue by over 50% and income by over 80%. Now, Finance of America is primed to deliver enhanced services—such as debt advisory—that will help promote lifetime customer loyalty. 2

BPR examples and IBM

Business process reengineering (BPR) with IBM takes a critical look at core processes to spot and redesign areas that need improvement. By stepping back, strategists can analyze areas like supply chain, customer experience and finance operations. BPR services experts can embed emerging technologies and overhaul existing processes to improve the business holistically. They can help you build new processes with intelligent workflows that drive profitability, weed out redundancies, and prioritize cost saving.

1. IBM Wow Story: Bouygues Becomes the AI Standard-Bearer in French Telecom. Last updated 10 November 2023.

2. IBM Wow Story: Finance of America Promotes Lifetime Loyalty via Customer-Centric Transformation. Last updated 23 February 2024.

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HYPOTHESIS AND THEORY article

This article is part of the research topic.

Using Case Study and Narrative Pedagogy to Guide Students Through the Process of Science

Molecular Storytelling: A Conceptual Framework for Teaching and Learning with Molecular Case Studies Provisionally Accepted

• 1 School of Interdisciplinary Arts and Sciences, University of Washington Bothell, United States
• 2 Institute for Quantitative Biomedicine, Rutgers, The State University of New Jersey, United States
• 3 Research Collaboratory for Structural Bioinformatics Protein Data Bank, Rutgers, The State University of New Jersey,, United States

The final, formatted version of the article will be published soon.

Molecular case studies (MCSs) provide educational opportunities to explore biomolecular structure and function using data from public bioinformatics resources. The conceptual basis for the design of MCSs has yet to be fully discussed in the literature, so we present molecular storytelling as a conceptual framework for teaching with case studies. Whether the case study aims to understand the biology of a specific disease and design its treatments or track the evolution of a biosynthetic pathway, vast amounts of structural and functional data, freely available in public bioinformatics resources, can facilitate rich explorations in atomic detail. To help biology and chemistry educators use these resources for instruction, a community of scholars collaborated to create the Molecular CaseNet. This community uses storytelling to explore biomolecular structure and function while teaching biology and chemistry. In this article, we define the structure of an MCS and present an example. Then, we articulate the evolution of a conceptual framework for developing and using MCSs. Finally, we related our framework to the development of technological, pedagogical, and content knowledge (TPCK) for educators in the Molecular CaseNet. The report conceptualizes an interdisciplinary framework for teaching about the molecular world and informs lesson design and education research.

Keywords: Molecular education, Case studies, Technological pedagogical and content knowledge (TPCK), Molecular structure and function, molecular visualization, Bioinformatics education, conceptual modeling

Received: 31 Jan 2024; Accepted: 23 Apr 2024.

Copyright: © 2024 Trujillo and Dutta. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) . The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Caleb M. Trujillo, University of Washington Bothell, School of Interdisciplinary Arts and Sciences, Bothell, United States

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• Introduction
• Conclusions
• Article Information

Nucleic acid amplification tests (NAATs) were from the Increasing Community Access to Testing platform. EUA indicates Emergency Use Authorization.

a Nine tests were removed because of reported ages older than 100 years.

b Of all tests with positive results, 17 620 were randomly selected for whole-genome sequencing and used to perform internal validation of S -gene target failure as a marker for the Omicron variant (eTable 1 in the Supplement ). This included 4905 tests also included in the main case-control analysis.

c During online registration for SARS-CoV-2 testing, individuals self-reported their COVID-19 vaccination status, including the number of doses (up to 4), product, and month and year of receipt for each dose. Vaccination data were considered incomplete if the number of doses reported did not match the products and dates reported.

d These 17 177 samples were used for the main case-control analysis that compared vaccination status between Omicron and Delta cases and SARS-CoV-2–negative controls. This included 2048 tests also included in the internal validation of S -gene target failure as a marker for the Omicron variant.

e For vaccine products, individuals could select from 4 options: Johnson & Johnson/Janssen, Pfizer-BioNTech, Moderna, and “other.”

f Persons were considered eligible for a booster if they reported 2 doses, with a testing date 6 months or more after the second dose, or if they reported 3 doses, with the third dose 6 months or more after the second dose.

g These 52 978 samples were used for the main case-control analysis that compared vaccination status between Omicron and Delta cases and SARS-CoV-2–negative controls. This included 2857 tests also included in the internal validation of S -gene target failure as a marker for the Omicron variant.

Shaded regions indicate 95% CIs. Months since second dose reflect 30-day increments since the second dose except for month 0, which only includes days 14 to 30 because tests from persons with second mRNA COVID-19 doses received less than 14 days before testing were excluded from the analysis. The total number of cases and controls included at each time point varied by product (total Ns reported below plots). OR indicates odds ratio.

For each plot, from top to bottom, lines in the box represent the 75th percentile, median, and 25th percentile. The whiskers extend to the largest and smallest values up to 1.5 times the interquartile range from the 75th and 25th percentiles, respectively. Data beyond the ends of the whiskers are plotted individually. Unvaccinated (Omicron n = 3412; Delta n = 5044; total n = 8456) were individuals who received zero vaccine doses. Two doses (tested ≥6 months after dose 2) of mRNA vaccine (Omicron n = 7245; Delta n = 4570; total n = 11 815) included vaccination histories BNT162b2/BNT162b2/no third dose, mRNA-1273/mRNA-1273/no third dose, mRNA-1273/BNT162b2/no third dose, and BNT162b2/mRNA-1273/no third dose. Three doses (tested ≥14 days after dose 3, with ≥6 months between doses 2 and 3) of mRNA vaccine (Omicron n = 2441; Delta n = 679; total n = 3120) included vaccination histories BNT162b2/BNT162b2/BNT162b2, mRNA-1273/mRNA-1273/mRNA-1273, BNT162b2/BNT162b2/mRNA-1273, mRNA-1273/mRNA-1273/BNT162b2, mRNA-1273/BNT162b2/BNT162b2, BNT162b2/mRNA-1273/BNT162b2, mRNA-1273/BNT162b2/mRNA-1273, and BNT162b2/mRNA-1273/mRNA-1273. Cycle threshold (Ct) values were compared between 3 doses and unvaccinated, 3 doses and 2 doses, and 2 doses and unvaccinated. Significance testing was performed with a 2-sided Mann-Whitney U test and false-discovery rate–corrected for multiple comparisons. Q  < .001 for all comparisons, except for comparing 3 doses vs unvaccinated for N gene for Omicron and for comparing 2 doses vs unvaccinated for the N and ORF1ab genes for Omicron and the S gene for Delta (eTable 2 in the Supplement ).

eTable 1. S-gene target failure and variant lineages among 17,620 positive SARS-CoV-2 tests whole genome sequenced in the Increasing Community Access to Testing platform between December 10th, 2021 and January 1st, 2022

eTable 2. Cycle threshold (Ct) values among 23,391 positive SARS-CoV-2 tests performed in the Increasing Community Access to Testing platform between December 10th, 2021 and January 1st, 2022

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Accorsi EK , Britton A , Fleming-Dutra KE, et al. Association Between 3 Doses of mRNA COVID-19 Vaccine and Symptomatic Infection Caused by the SARS-CoV-2 Omicron and Delta Variants. JAMA. 2022;327(7):639–651. doi:10.1001/jama.2022.0470

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Association Between 3 Doses of mRNA COVID-19 Vaccine and Symptomatic Infection Caused by the SARS-CoV-2 Omicron and Delta Variants

• 1 Centers for Disease Control and Prevention COVID-19 Response, Atlanta, Georgia
• 2 Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia
• Editorial Booster Vaccination to Prevent COVID-19 in the Era of Omicron Saad B. Omer, MBBS, MPH, PhD; Preeti N. Malani, MD, MSJ JAMA
• Medical News & Perspectives Omicron Has Reached the US—Here’s What Infectious Disease Experts Know About the Variant Jennifer Abbasi JAMA
• Biotech Innovations Studies Suggest COVID-19 Vaccine Boosters Save Lives Jennifer Abbasi JAMA
• Original Investigation Third Dose of BNT162b2 Vaccine and SARS-CoV-2 Infection in Health Care Workers Avishay Spitzer, MD; Yoel Angel, MD, MBA; Or Marudi, MSc; David Zeltser, MD, MHA; Esther Saiag, MD, MHA; Hanoch Goldshmidt, PhD, MBA; Ilana Goldiner, PhD, MHA; Moshe Stark, PhD; Ora Halutz, MSc; Ronni Gamzu, MD, PhD, MBA, LLB; Marina Slobodkin, MD; Nadav Amrami, MD; Eugene Feigin, MD; Meital Elbaz, MD; Moran Furman, MD; Yotam Bronstein, MD; Amanda Chikly, MD; Anna Eshkol, MD; Victoria Furer, MD; Talia Mayer, MD, MHA; Suzy Meijer, MD; Ariel Melloul, MD; Michal Mizrahi, MD; Michal Yakubovsky, MD; Dana Rosenberg, MD; Ari Safir, MD; Liron Spitzer, MD; Eyal Taleb, MD; Ori Elkayam, MD; Adi Silberman, MD; Tali Eviatar, MD; Ofir Elalouf, MD; Tal Levinson, MD; Katia Pozyuchenko, MSc; Ayelet Itzhaki-Alfia, PhD; Eli Sprecher, MD, PhD, MBA; Ronen Ben-Ami, MD; Oryan Henig, MD JAMA
• Research Letter Comparison of mRNA-1273 and BNT162b2 Vaccines on Breakthrough SARS-CoV-2 Infections, Hospitalizations, and Death During the Delta-Predominant Period Lindsey Wang; Pamela B. Davis, MD, PhD; David C. Kaelber, MD, PhD, MPH; Nora D. Volkow, MD; Rong Xu, PhD JAMA
• Viewpoint Preventing SARS-CoV-2 Transmission in Health Care Settings in the Context of Omicron Michael Klompas, MD, MPH; Abraar Karan, MD, MPH, DTM&H JAMA
• Original Investigation Association of Vaccination With Symptomatic SARS-CoV-2 Infection by Time Since Vaccination and Delta Predominance Amadea Britton, MD; Katherine E. Fleming-Dutra, MD; Nong Shang, PhD; Zachary R. Smith, MA; Tandin Dorji, MS; Gordana Derado, PhD; Emma K. Accorsi, PhD; Umed A. Ajani, MBBS, MPH; Joseph Miller, PhD; Stephanie J. Schrag, DPhil; Jennifer R. Verani, MD, MPH JAMA
• Research Letter Estimates of SARS-CoV-2 Omicron Variant Severity in Ontario, Canada Ana Cecilia Ulloa, MPH; Sarah A. Buchan, PhD; Nick Daneman, MD, MSc; Kevin A. Brown, PhD JAMA
• Research Letter Secondary Attack Rates for SARS-CoV-2 Omicron and Delta Variants in Norwegian Households Silje B. Jørgensen, MD, PhD; Karin Nygård, PhD; Oliver Kacelnik, MD, PhD; Kjetil Telle, PhD JAMA
• Research Letter Excess Mortality in Massachusetts During the Delta and Omicron Waves of COVID-19 Jeremy Samuel Faust, MD, MS; Chengan Du, PhD; Chenxue Liang, MS, MPH; Katherine Dickerson Mayes, MD, PhD; Benjamin Renton, BA; Kristen Panthagani, MD, PhD; Harlan M. Krumholz, MD, SM JAMA
• Research Letter COVID-19 Booster Vaccination and Omicron Infection in a Highly Vaccinated Cohort of NBA Players and Staff Caroline G. Tai, PhD, MPH; Lisa L. Maragakis, MD, MPH; Sarah Connolly, PhD, MPH; John DiFiori, MD; Deverick J. Anderson, MD, MPH; Yonatan H. Grad, MD, PhD; Christina DeFilippo Mack, PhD, MSPH JAMA
• Research Letter Vaccine Effectiveness Against COVID-19 and Other Variants of Concern in Utah Lindsay T. Keegan, PhD; Shaun Truelove, PhD; Justin Lessler, PhD JAMA Network Open

Question   What is the association between 3 doses of mRNA COVID-19 vaccine and symptomatic SARS-CoV-2 infection with the Omicron and Delta variants?

Findings   In this test-negative case-control analysis that included 70 155 tests from symptomatic adults, the likelihood of vaccination with 3 mRNA vaccine doses (vs unvaccinated) was significantly lower among both Omicron (odds ratio, 0.33) and Delta (odds ratio, 0.065) cases than SARS-CoV-2–negative controls; a similar pattern was observed with 3 vaccine doses vs 2 doses (Omicron odds ratio, 0.34; Delta odds ratio, 0.16).

Meaning   These findings suggest that vaccination with 3 doses of mRNA COVID-19 vaccine, compared with being unvaccinated and with receipt of 2 doses, was associated with protection against both the Omicron and Delta variants, although higher odds ratios for the association with Omicron infection suggest less protection for Omicron than for Delta.

Importance   Assessing COVID-19 vaccine performance against the rapidly spreading SARS-CoV-2 Omicron variant is critical to inform public health guidance.

Objective   To estimate the association between receipt of 3 doses of Pfizer-BioNTech BNT162b2 or Moderna mRNA-1273 vaccine and symptomatic SARS-CoV-2 infection, stratified by variant (Omicron and Delta).

Design, Setting, and Participants   A test-negative case-control analysis among adults 18 years or older with COVID-like illness tested December 10, 2021, through January 1, 2022, by a national pharmacy-based testing program (4666 COVID-19 testing sites across 49 US states).

Exposures   Three doses of mRNA COVID-19 vaccine (third dose ≥14 days before test and ≥6 months after second dose) vs unvaccinated and vs 2 doses 6 months or more before test (ie, eligible for a booster dose).

Main Outcomes and Measures   Association between symptomatic SARS-CoV-2 infection (stratified by Omicron or Delta variants defined using S -gene target failure) and vaccination (3 doses vs unvaccinated and 3 doses vs 2 doses). Associations were measured with multivariable multinomial regression. Among cases, a secondary outcome was median cycle threshold values (inversely proportional to the amount of target nucleic acid present) for 3 viral genes, stratified by variant and vaccination status.

Results   Overall, 23 391 cases (13 098 Omicron; 10 293 Delta) and 46 764 controls were included (mean age, 40.3 [SD, 15.6] years; 42 050 [60.1%] women). Prior receipt of 3 mRNA vaccine doses was reported for 18.6% (n = 2441) of Omicron cases, 6.6% (n = 679) of Delta cases, and 39.7% (n = 18 587) of controls; prior receipt of 2 mRNA vaccine doses was reported for 55.3% (n = 7245), 44.4% (n = 4570), and 41.6% (n = 19 456), respectively; and being unvaccinated was reported for 26.0% (n = 3412), 49.0% (n = 5044), and 18.6% (n = 8721), respectively. The adjusted odds ratio for 3 doses vs unvaccinated was 0.33 (95% CI, 0.31-0.35) for Omicron and 0.065 (95% CI, 0.059-0.071) for Delta; for 3 vaccine doses vs 2 doses the adjusted odds ratio was 0.34 (95% CI, 0.32-0.36) for Omicron and 0.16 (95% CI, 0.14-0.17) for Delta. Median cycle threshold values were significantly higher in cases with 3 doses vs 2 doses for both Omicron and Delta (Omicron N gene: 19.35 vs 18.52; Omicron ORF1ab gene: 19.25 vs 18.40; Delta N gene: 19.07 vs 17.52; Delta ORF1ab gene: 18.70 vs 17.28; Delta S gene: 23.62 vs 20.24).

Conclusions and Relevance   Among individuals seeking testing for COVID-like illness in the US in December 2021, receipt of 3 doses of mRNA COVID-19 vaccine (compared with unvaccinated and with receipt of 2 doses) was less likely among cases with symptomatic SARS-CoV-2 infection compared with test-negative controls. These findings suggest that receipt of 3 doses of mRNA vaccine, relative to being unvaccinated and to receipt of 2 doses, was associated with protection against both the Omicron and Delta variants, although the higher odds ratios for Omicron suggest less protection for Omicron than for Delta.

On November 24, 2021, health authorities in South Africa reported the emergence of a new SARS-CoV-2 variant, B.1.1.529 (Omicron). 1 Omicron has spread rapidly, and as of January 6, 2022, was identified in 149 countries across all 6 World Health Organization regions. 2 Omicron was first detected in the US on December 1, 2021, and by January 1, 2022, was estimated to be responsible for 95% of sequenced new cases. 3 , 4

Sequencing of early Omicron strains documented more than 30 mutations in the spike protein, including in the receptor binding domain. 5 , 6 These mutations, combined with observed exponential growth in case counts, even in settings with substantial rates of COVID-19 vaccination or previous SARS-CoV-2 infection, raised concerns about potential for increased transmissibility and immune escape. 2 , 7 - 10 There is an urgent need to understand the protection provided by current vaccination regimens against Omicron, including any additional protection derived from booster doses.

In this analysis, a subset of data from the national Increasing Community Access to Testing (ICATT) platform was used to estimate the association of receipt of 3 doses of a mRNA COVID-19 vaccine (vs unvaccinated and vs 2 doses) with symptomatic infection with the Omicron and Delta variants, using an internally validated genetic proxy for variant identification.

The human subjects advisor for the Centers for Disease Control and Prevention (CDC) National Center for Immunization and Respiratory Diseases determined that this analysis met the requirements for public health surveillance as outlined in 45 CFR §46.102(l)(2). Because data were collected during routine operational procedures, this secondary data analysis did not require informed consent and was conducted consistent with applicable federal law and CDC policy.

Data from the ICATT platform 11 —a Department of Health and Human Services (HHS) partnership facilitating no-cost, drive-through SARS-CoV-2 testing at pharmacies across all 50 states, the District of Columbia, and Puerto Rico—were analyzed. Testing sites were selected by HHS to prioritize access in racially and ethnically diverse communities and areas with moderate-to-high social vulnerability. Data for this analysis were limited to tests occurring between December 10, 2021, and January 1, 2022, at testing sites that collected booster vaccination history and sent specimens to a single laboratory chain (Aegis Sciences Corp) for processing. The laboratory used the TaqPath COVID-19 Combo Kit (Thermo Fisher Scientific), which identifies SARS-CoV-2 infections by detecting 3 targets from the viral ORF1ab , S , and N gene regions. The laboratory reported overall test results and cycle threshold (Ct) values for each of these targets for SARS-CoV-2–positive specimens.

Individuals registered online for testing at drive-through sites where nasal swabs were collected. During registration, individuals self-reported symptom status (asymptomatic or symptomatic with ≥1 COVID-like symptom), race, ethnicity, sex, age, state of residence, history of prior SARS-CoV-2 infection, and underlying conditions. Fixed categories were used to capture data for symptoms, race, ethnicity, and underlying chronic conditions including the presence of an immunocompromising condition (defined in the questionnaire as “such as from immunocompromising medications, solid organ or blood stem cell transplant, HIV, or other immunocompromising conditions”). Race and ethnicity were collected as required data elements under HHS COVID-19 laboratory reporting requirements. 12 The testing program geocoded testing sites to identify their census tract Social Vulnerability Index (SVI) score. 13

Patients also self-reported COVID-19 vaccination status, including the number of doses (up to 4), product, and month and year of receipt for each dose. For doses received in the same month or the month prior to testing, an additional question was asked to specify whether the dose was received 14 days or more before testing. Vaccination reporting was not mandatory, and information was not verified. Data were reported to HHS with an estimated 3-day lag and were deidentified to remove any personally identifying information.

A retrospective test-negative case-control analysis was conducted on samples collected from December 10, 2021, to January 1, 2022, from adults 18 years or older with symptomatic COVID-like illness. The test-negative design is a commonly used observational method for evaluating the performance of vaccines in which participants are enrolled based on a clinical case definition, tested for the vaccine-preventable outcome of interest, and classified as cases or controls based on that testing; the odds of prior vaccination among cases and controls are compared as an estimate of the association between vaccination and the outcome. 14 , 15 A strength of the test-negative design is that all participants seek care (or testing) for a common clinical case definition, which can help reduce bias resulting from confounding by differential care-seeking behavior. 16 , 17

The unit of analysis for this study was tests; positive results were classified as cases, and negative results as controls. The short study period and restriction to symptomatic individuals limited the probability of individuals contributing more than 1 test.

Because protection from mRNA COVID-19 vaccines is substantially lower in immunocompromised individuals 18 and the recommended vaccine dosing regimen is different from that of immunocompetent individuals, 19 tests from individuals reporting an immunocompromising condition were excluded. Tests from persons reporting a positive COVID-19 test result within the previous 90 days were excluded to reduce potential misclassification. Tests with unknown vaccination status or incomplete vaccination data (ie, missing vaccination dates or products), from individuals reporting prior receipt of 1 or 4 mRNA vaccine doses or of non-mRNA COVID-19 vaccines, or from persons with improbable ages (defined as >100 years) were also excluded.

Additionally, among tests with positive results, Ct values were described by variant and by vaccination status (3 doses, 2 doses, and unvaccinated). Ct values reflect the number of cycles during polymerase chain reaction amplification needed to detect viral genetic material and are inversely proportional to the amount of target nucleic acid in the tested sample. 20 Ct values were examined to better understand the relative amounts of genetic material present in positive samples by variant and vaccination status.

The exposure of interest was self-report of any 3 doses of BNT162b2 (Pfizer-BioNTech) or mRNA-1273 (Moderna) vaccine (including mixed-product regimens) vs unvaccinated and vs any 2 doses of BNT162b2 or mRNA-1273 vaccine. For individuals reporting 2 vaccine doses, tests were excluded if the second dose was received less than 6 months prior to test date to ensure eligibility for a booster dose. For those reporting 3 doses, tests were excluded if the interval between second and third doses was less than 6 months, as per recommendations during the analysis period for booster doses among immunocompetent individuals, 19 or if the most recent dose was received less than 14 days before testing. Another exposure examined was any 2 doses of BNT162b2 or mRNA-1273 vaccine, with the second dose received 14 days or more before testing vs unvaccinated; assessment of this exposure did not limit to those eligible for a booster dose (ie, did not limit to those with 6 or more months elapsed between the second dose and date of testing).

The primary outcome was symptomatic SARS-CoV-2 infection with the Omicron or Delta variant. For this analysis, an Omicron case was defined as presence of S -gene target failure (SGTF) in the test sample and a Delta case as absence of SGTF in the test sample. All samples that were determined by the processing laboratory to be SARS-CoV-2 positive had Ct values for at least 2 of the N , ORF1ab , and S genes. SARS-CoV-2–positive samples were considered to have SGTF if they had Ct values for the N and ORF1ab genes but not for the S gene; otherwise, samples were considered not to have SGTF.

SGTF may serve as a proxy for the presence of the Omicron variant in samples tested with the TaqPath COVID-19 Combo Kit assay because of the presence of deletions in the S -gene region for Omicron that are not present in Delta 2 , 21 ; the deletions lead to S -gene–negative results in Omicron lineages BA.1 and B.1.1.529 but not the majority of Delta samples. While levels of non-Delta circulating variants other than Omicron remain low, samples with SGTF may be presumed to be Omicron. 22 At the time of this analysis 99.9% of sequenced samples in the US prior to the emergence of Omicron were Delta. 4 To validate the use of SGTF as a proxy for Omicron in the ICATT data, the frequency of SGTF was examined in a randomly selected subset of tests with positive results that were sequenced during the same period as the analysis. The sequenced subset was drawn from the complete database of test results from the laboratory, including tests not eligible for the main analysis. Sequencing data were not available for most cases included in the main analysis, which is why SGTF was used as a proxy. The sensitivity of SGTF for detecting Omicron (B.1.1.529 or BA.1 lineage) was 83.4% and the specificity was 99.2% (eTable 1 in the Supplement ).

Secondary outcome measures included Ct values for the N and ORF1ab genes among Omicron and Delta cases and S gene among Delta cases.

The association between symptomatic infection with the Omicron or Delta variants and vaccination was estimated by comparing the odds of prior 3-dose vaccination vs unvaccinated and the odds of prior 3-dose vaccination vs 2-dose vaccination in cases vs controls using multivariable multinomial logistic regression. The odds ratio (OR) for 3 doses vs unvaccinated was used as an estimate of 3-dose vaccine effectiveness (effectiveness = [1 – OR] × 100%), with lower ORs suggesting more protection. The OR for 3 doses vs 2 doses was used as an estimate of relative vaccine effectiveness, reflecting additional protection from a booster dose relative to 2 doses. ORs were estimated for any combination of mRNA vaccine and separately for BNT162b2 and mRNA-1273.

Models included the number of days between the start of the analysis period and test date (as a continuous variable), age group, sex, race, ethnicity, testing site HHS region, testing site census tract SVI (dichotomized as 0 to <0.5 and ≥0.5-1), and number of underlying chronic conditions (0, 1, or ≥2) as covariates to adjust for potential confounding bias. Unknown race and ethnicity were coded as categories of their respective variables instead of null values to retain these records in regression models. Data with missing values for other model covariates (specifically, sex and SVI) were coded as null values and therefore dropped from adjusted regression models.

Two-sided 95% CIs were calculated for each reported OR, with 95% CIs that excluded 1 considered statistically significant. Two-sided P values for the association between vaccination and symptomatic infection with Omicron compared with Delta were corrected for false-discovery rate (FDR) using the Benjamini-Hochberg method (to account for type I error due to multiple comparisons), and results with Q values (ie, P values adjusted for the FDR) less than .001 were considered statistically significant.

To aid in the interpretation of associations of 3 vaccine doses vs unvaccinated and vs 2 vaccine doses, a secondary analysis was performed examining the association between 2 doses vs unvaccinated by time since receipt of second dose. The association between infection and 2 mRNA vaccine doses vs unvaccinated was examined separately for each product-variant combination by logistic regression incorporating the same covariates as above as well as month (0-11) since second dose using a 2-knot spline at months 3.5 and 7.5.

For comparison of Ct values among cases by variant and exposure status (3 doses vs unvaccinated, 3 doses vs 2 doses, and 2 doses vs unvaccinated), the 2-sided Mann-Whitney U test was used to identify significant differences in median Ct values. Correction for FDR was applied for each comparison of exposure status, and results with Q  < .001 were considered statistically significant.

Statistical analyses were performed in RStudio and R, version 4.0.3 (R Foundation). Multinomial logistic regression was performed using the nnet R package, version 7.3-16.

A total of 70 155 tests from 4666 sites on samples collected between December 10 and January 1 across 49 states met inclusion criteria ( Figure 1 ), including 23 391 cases (13 098 Omicron; 10 293 Delta) and 46 764 controls ( Table 1 ) (mean age, 40.3 [SD, 15.6] years; 42 050 [60.1%] women). Included tests were most frequently performed on persons aged 25 to 34 years (30.4%), followed by those aged 35 to 44 years (19.3%), and on persons who reported being of White race (75.5%). More than one-third of tests (36.4%) were from people with reported underlying health conditions, with high blood pressure most common, followed by overweight. Compared with controls, cases were more frequently tests from persons aged 25 to 34 years (Omicron 35.1% and Delta 31.0% vs controls 28.9%), of Black/African American race (Omicron 24.4% and Delta 14.9% vs controls 11.9%), and of Hispanic/Latino ethnicity (Omicron 22.5% and Delta 17.7% vs controls 17.4%) ( Table 1 ).

For vaccination history, the most common combination of 2 doses was BNT162b2/BNT162b2 (63.4% of 2-dose regimens), followed by mRNA-1273/mRNA-1273 (36.4%); the most common 3-dose combination was BNT162b2/BNT162b2/BNT162b2 (57.5% of 3-dose regimens) ( Table 1 ). Among individuals receiving 2 doses only, the median time between the second dose and test date was 8 months. Among those receiving 3 doses, the median time between the second dose and test date was 8 months, between the second and third dose was 7 months, and between the third dose and test date was 1 month. Prior receipt of 3 vaccine doses was reported for 18.6% (2441/13 098) of Omicron cases, 6.6% (679/10 293) of Delta cases, and 39.7% (18 587/46 764) of controls ( Table 1 ).

Among Omicron cases and controls, the adjusted OR for prior receipt of 3 mRNA vaccine doses vs unvaccinated was 0.33 (95% CI, 0.31-0.35); among Delta cases and controls, the adjusted OR was 0.065 (95% CI, 0.059-0.071; Q  < .001 for comparison of ORs for Omicron and Delta) ( Table 2 ). When models were stratified by mRNA product, the adjusted ORs for Omicron were 0.35 (95% CI, 0.32-0.38) for 3 doses of BNT162b2 vs unvaccinated and 0.28 (95% CI, 0.26-0.31) for 3 doses of mRNA-1273 vs unvaccinated. For Delta, the adjusted ORs were 0.077 (95% CI, 0.070-0.086) for 3 doses of BNT162b2 vs unvaccinated and 0.045 (95% CI, 0.038-0.053) for 3 doses of mRNA-1273 vs unvaccinated. Q values for all comparisons (Omicron vs Delta) of product-specific ORs were less than .001 ( Table 2 ). An adjusted OR less than 1 indicates that relatively fewer test-positive cases had prior receipt of 3 doses (vs unvaccinated), with values closer to 0 representing a stronger magnitude of association.

Among Omicron cases and controls, the adjusted OR for prior receipt of 3 mRNA vaccine doses vs 2 doses was 0.34 (95% CI, 0.32-0.36); among Delta cases and controls, the adjusted OR was 0.16 (95% CI, 0.14-0.17; Q  < .001) ( Table 2 ). When models were stratified by mRNA product, the adjusted ORs for Omicron were 0.35 (95% CI, 0.32-0.37) for 3 doses of BNT162b2 vs 2 doses and 0.31 (95% CI, 0.28-0.34) for 3 doses of mRNA-1273 vs 2 doses. For Delta, the adjusted ORs were 0.17 (95% CI, 0.16-0.19) for 3 doses of BNT162b2 vs 2 doses and 0.13 (95% CI, 0.11-0.15) for 3 doses of mRNA-1273 vs 2 doses. Q values for all comparisons (Omicron vs Delta) of product-specific ORs were less than .001 ( Table 2 ). An adjusted OR less than 1 indicates that relatively fewer test-positive cases had prior receipt of 3 doses (vs 2 doses), with values closer to 0 representing a stronger magnitude of association.

Among Omicron cases and controls, the adjusted OR for prior receipt of any 2 mRNA vaccine doses vs unvaccinated was lowest soon after the second dose and generally increased over time since vaccination ( Figure 2 ). The upper bound of the 95% CI was consistently greater than 1 starting at 3 months after second dose for BNT162b2 and at 6 months after second dose for mRNA-1273. For Delta, the OR for any 2 doses vs unvaccinated was also lowest soon after receipt of second dose; however, the ORs remained less than 0.46 for BNT162b2 and less than 0.40 for mRNA-1273, with 95% CIs that did not include 1 ( Figure 2 ).

Among Omicron cases, median Ct values were significantly higher in samples from persons reporting 3 mRNA vaccine doses vs unvaccinated for the ORF1ab gene (19.25 vs 18.58; Q  < .001) but not for the N gene (19.35 vs 18.71; Q  = .002) (eTable 2 in the Supplement ). Among Delta cases, median Ct values of the N , ORF1ab , and S genes were significantly higher in samples from persons receiving 3 doses vs unvaccinated ( N gene: 19.07 vs 18.28; ORF1ab gene: 18.70 vs 17.84; S gene: 23.62 vs 19.58; Q  < .001 for all comparisons) ( Figure 3 ; eTable 2 in the Supplement ). In comparing median Ct values in samples from persons reporting 3 mRNA vaccine doses vs 2 doses, all were significantly higher (Omicron N gene, 19.35 vs 18.52; Omicron ORF1ab gene, 19.25 vs 18.40; Delta N gene, 19.07 vs 17.52; Delta ORF1ab gene, 18.70 vs 17.28; Delta S gene, 23.62 vs 20.24; Q  < .001 for all comparisons) ( Figure 3 ; eTable 2 in the Supplement ).

In this analysis of SARS-CoV-2 tests performed at sites across the US during a 23-day period when incidence of Omicron was rapidly increasing, vaccination with a third dose of an mRNA COVID-19 vaccine was significantly less common among individuals infected with either the Omicron or Delta variants compared with uninfected individuals. Because of the timing of booster recommendations in the US, most booster recipients had recent vaccination (median of 1 month since booster).

The magnitude of the association between vaccination and infection depended on the referent group and variant. For 3 doses vs unvaccinated, the ORs corresponded to an estimated effectiveness (1 – OR) of 67.3% (95% CI, 65.0%-69.4%) for Omicron and 93.5% (95% CI, 92.9%-94.1%) for Delta. For 3 doses vs 2 doses, the ORs corresponded to an estimated relative effectiveness of 66.3% (95% CI, 64.3%-68.1%) for Omicron and 84.5% (95% CI, 83.1%-85.7%) for Delta. For Omicron, the similarity between ORs for 3 doses using the unvaccinated referent group and the 2-dose referent group is consistent with the attenuation of the OR for 2 doses vs unvaccinated with time since second dose, which reflected no significant association by 6 months after second dose for both products. For Delta, the association between infection and 2 doses vs unvaccinated also attenuated over time since second dose, which is consistent with previous reports 23 - 26 ; however, the ORs were statistically significant even up to 11 months after the second dose.

Although these findings provide evidence supporting that 3-dose schedules are protective and that booster doses are more protective than primary series alone, the significantly higher OR for Omicron suggests that booster doses are less protective against Omicron than against Delta. These results are consistent with in-vitro neutralization assays that suggested the potential for immune evasion with Omicron. 27 - 30 They also highlight that, in the setting of Omicron, higher booster coverage rates may be needed to achieve the same public health benefit as during Delta predominance. Additionally, nonpharmaceutical interventions may provide an important adjunct to slow the spread of Omicron.

Among both Omicron and Delta variant cases, Ct values were generally higher (reflecting less genetic material detected) among those with 3 vaccine doses compared with unvaccinated or to 2 doses; with 1 exception ( N gene for Omicron, 3 doses vs unvaccinated), all comparisons were statistically significant. Ct values are not a direct measure of viral load or infectiousness and can vary for a range of reasons including timing of sample collection relative to infection onset, specimen transport times, and laboratory assays and conditions. However, they have previously been used as a crude indicator of transmission potential, with higher values representing decreased likelihood of a case being infectious. 31 - 37 In this analysis, the Ct values were based on 2 targets from a single assay, performed at a single laboratory chain, increasing their comparability. The significantly higher Ct values found in individuals reporting receipt of 3 doses vs unvaccinated or 2 doses, for both the Omicron and Delta variants, may suggest decreased infectiousness in those receiving an mRNA booster dose. However, caution should be taken in interpreting these differences between groups as epidemiologically meaningful because all differences were less than 1 unit on the log scale.

This study has several limitations. First, vaccination status and symptoms were based on patient self-reported data, potentially leading to misclassification. Second, because the testing data do not include identifiers, tests rather than persons were used as the unit of analysis, and individuals may have been included more than once. However, the analysis was restricted to symptomatic individuals to reduce inclusion of individuals serially testing for reasons other than symptomatic disease, and the short study period (23 days) reduces the probability of individuals contributing multiple test results.

Third, individuals remaining unvaccinated or unboosted may differ from individuals with 3 doses in ways that cannot be adjusted for with the variables in this data set. Fourth, some factors that could potentially be associated with both vaccination and risk of infection and thus confound the observed associations (eg, masking and social distancing) were not measured. Fifth, US adults were recommended to receive booster doses at different dates depending on age, underlying conditions, and occupation; therefore, some subgroups may have had greater access to boosters before broader recommendations were made.

Sixth, sequencing data were limited for tests included in this analysis so SGTF was used as a proxy for Omicron infection; however, sensitivity of 83.4% and specificity of 99.2% in internal validation suggest that samples classified as Omicron by SGTF were almost always Omicron. Although some Omicron samples may have been misclassified as Delta, this would not affect the association between Omicron and vaccination status and would bias the association of Delta and vaccination toward that of Omicron such that the reported differences between Omicron and Delta are conservative.

Seventh, the analysis of the association between symptomatic infection and 3 vs 2 doses did not directly account for waning of the primary series, although all tests were performed at least 6 months after receipt of a primary series, at which point protection from 2 doses was quite reduced, particularly for the Omicron variant. Eighth, associations between infection and vaccination are not constant and will likely continue to change with time since last dose.

Among individuals seeking testing for COVID-like illness in the US in December 2021, receipt of 3 doses of mRNA COVID-19 vaccine (compared with unvaccinated and with receipt of 2 doses) was less likely among cases with symptomatic SARS-CoV-2 infection compared with test-negative controls. These findings suggest that receipt of 3 doses of mRNA vaccine, relative to being unvaccinated and to receipt of 2 doses, was associated with protection against both the Omicron and Delta variants, although the higher odds ratios for Omicron suggest less protection for Omicron than for Delta.

Corresponding Author: Emma K. Accorsi, PhD, COVID-19 Response, US Centers for Disease Control and Prevention, 1600 Clifton Rd Mailstop H24-6, Atlanta, GA 30329 ( [email protected] ).

Accepted for Publication: January 13, 2022.

Published Online: January 21, 2022. doi:10.1001/jama.2022.0470

Author Contributions : Drs Accorsi and Britton had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Drs Accorsi and Britton contributed equally as co–first authors; Drs Verani and Schrag contributed equally as co–senior authors.

Concept and design: Accorsi, Britton, Fleming-Dutra, Shang, Miller, Schrag, Verani.

Acquisition, analysis, or interpretation of data: Accorsi, Britton, Fleming-Dutra, Smith, Shang, Derado, Schrag, Verani.

Drafting of the manuscript: Accorsi, Britton, Schrag, Verani.

Critical revision of the manuscript for important intellectual content: All authors.

Statistical analysis: Accorsi, Britton, Shang, Derado.

Obtained funding: Miller.

Administrative, technical, or material support: Britton, Smith, Miller, Verani.

Supervision: Miller, Schrag, Verani.

Conflict of Interest Disclosures : None reported.

Funding/Support: Funding for the Increasing Community Access to Testing platform was provided by the US Department of Health and Human Services. Funding for this analysis was provided by the Centers for Disease Control and Prevention (CDC).

Role of the Funder/Sponsor: The CDC was involved in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, and approval of the manuscript; and decision to submit the manuscript for publication. CDC controlled publication decisions.

Disclaimer: The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the CDC.

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Moderna partners with OpenAI to deploy ChatGPT Enterprise to thousands of employees across the company. Now every function is empowered with AI, creating novel use cases and GPTs that accelerate and expand the impact of every team.

Moderna has been at the intersection of science, technology, and health for more than 10 years. Moderna’s mission is to deliver the greatest possible impact to people through mRNA medicines—with the COVID-19 vaccine being their most well-known breakthrough. 

The company has partnered with OpenAI since early 2023. Now, ChatGPT Enterprise is evolving how Moderna operates across each function.

Moderna is using its platform for developing mRNA medicines to bring up to 15 new products to market in the next 5 years—from a vaccine against RSV to individualized cancer treatments. In order to achieve its ambitions, Moderna has adopted a people-centric, technology-forward approach, constantly testing new technology and innovation that can increase human capacity and clinical performance.

We believe very profoundly at Moderna that ChatGPT and what OpenAI is doing is going to change the world. We’re looking at every business process—from legal, to research, to manufacturing, to commercial—and thinking about how to redesign them with AI.

Moderna brings AI to everyone

Moderna adopted generative AI the same way Moderna adopts other technology: with the mindset of using the power of digital to maximize its positive impact on patients. To allow AI to flourish, they knew they needed to start with the user and invest in laying a strong foundation for change.

Moderna’s objective was to achieve 100% adoption and proficiency of generative AI by all its people with access to digital solutions in six months. “We believe in collective intelligence when it comes to paradigm changes,” said Miller, “it’s everyone together, everyone with a voice and nobody left behind.” For this, Moderna assigned a team of dedicated experts to drive a bespoke transformation program. Their approach combined individual, collective and structural change management initiatives.   

Individual change management initiatives included in-depth research and listening programs, as well as trainings hosted in person, online and with dedicated AI learning companions. “Using AI to teach AI was key to our success”, Miller points out. Collective change management initiatives included an AI prompt contest to identify the top 100 AI power users who were then structured as a cohort of internal Generative AI Champions. Moderna’s culture of learning led to local office hours in every business line and geography, and scaled through an internal forum on AI, which now has 2,000 active weekly participants. Lastly, structural change management initiatives included engaging Moderna’s CEO and executive committee members to foster AI culture through leadership meetings and town halls as well as incentive programs and sponsored events with internal and external experts.  

 This work led to an early win with the launch of an internal AI chatbot tool, mChat, at the beginning of 2023. Built on OpenAI’s API, mChat was a success, adopted by more than 80% of employees across the company, building a solid foundation for the adoption of ChatGPT Enterprise.  

90% of companies want to do GenAI, but only 10% of them are successful, and the reason they fail is because they haven’t built the mechanisms of actually transforming the workforce to adopt new technology and new capabilities.

Building momentum with ChatGPT Enterprise

With the launch of ChatGPT Enterprise, Moderna had a decision to make: continue developing mChat as an all-purpose AI tool, or give employees access to ChatGPT Enterprise?

“As a science-based company, we research everything,” said Brice Challamel, Head of AI Products and Platforms at Moderna. Challamel’s team did extensive user testing comparing mChat, Copilot, and ChatGPT Enterprise. “We found out that the net promoter score of ChatGPT Enterprise was through the roof. This was by far the company-favorite solution, and the one we decided to double down on,” Challamel said.  

Once employees had a way to create their own GPTs easily, the only limit was their imaginations. “We were never here to fill a bucket, but to light a fire,” Challamel said. “We saw the fire spread, with hundreds of use cases creating positive value across teams. We knew we were on to something revolutionary for the company.”

The company’s results are beyond expectations. Within two months of the ChatGPT Enterprise adoption: 

• Moderna had 750 GPTs across the company
• 40% of weekly active users created GPTs 
• Each user has 120 ChatGPT Enterprise conversations per week on average

Augmenting clinical trial development with GPTs

One of the many solutions Moderna has built and is continuing to develop and validate with ChatGPT Enterprise is a GPT pilot called Dose ID. Dose ID has the potential to review and analyze clinical data and is able to integrate and visualize large datasets. Dose ID is intended for use as a data-analysis assistant to the clinical study team, helping to augment the team’s clinical judgment and decision-making.

 “Dose ID has provided supportive rationale for why we have picked a specific dose over other doses. It has allowed us to create customized data visualizations and it has also helped the study team members converse with the GPT to further analyze the data from multiple different angles,” said Meklit Workneh, Director of Clinical Development at Moderna. 

Dose ID uses ChatGPT Enterprise’s advanced data analysis feature to automate the analysis and verify the optimal vaccine dose selected by the clinical study team, by applying standard dose selection criteria and principles. Dose ID provides a rationale, references its sources, and generates informative charts illustrating the key findings. This allows for a detailed review, led by humans and with AI input, prioritizing safety and optimizing the vaccine profile prior to further development in late-stage clinical trials. 

“The Dose ID GPT has the potential to boost the amount of work we’re able to do as a team. We can comprehensively evaluate these extremely large amounts of data, and do it in a very efficient, safe, and accurate way, while helping to ensure security and privacy,” added Workneh.

Improving compliance and telling the company’s story

Moderna’s legal team boasts 100% adoption of ChatGPT Enterprise. “It lets us focus our time and attention on those matters that are truly driving an impact for patients,” said Shannon Klinger, Moderna’s Chief Legal Officer. 

Now, with the Contract Companion GPT, any function can get a clear, readable summary of a contract. The Policy Bot GPT helps employees get quick answers about internal policies without needing to search through hundreds of documents. 

Moderna’s corporate brand team has also found many ways to take advantage of ChatGPT Enterprise. They have a GPT that helps prepare slides for quarterly earnings calls, and another GPT that helps convert biotech terminology into approachable language for investor communications. 

“Sometimes we’re so in our own world, and AI helps the brand think beyond that,” explained Kate Cronin, Chief Brand Officer of Moderna. “What would my mother want to know about Moderna, versus a regulator, versus a doctor? How do we tell our story in an effective way across different audiences? That’s where I think there’s a huge opportunity.”

A team of a few thousand can perform like a team of 100,000

With an ambitious plan to launch multiple products in the next few years, Moderna sees AI as a key component to their success—and their ability to stay lean as a business while setting new benchmarks in innovation. 

“If we had to do it the old biopharmaceutical ways, we might need a hundred thousand people today,” said Bancel. “We really believe we can maximize our impact on patients with a few thousand people, using technology and AI to scale the company.” 

Moderna has been well positioned to leverage generative AI having spent the last decade building a robust tech stack and data platform. The company fosters a culture of learning and curiosity, attracting employees that excel in adopting new technologies and building AI-first solutions.

By making business processes at Moderna more efficient and accurate, the use of AI ultimately translates to better outcomes for patients. “I’m really thankful for the entire OpenAI team, and the time and engagement they have with our team, so that together we can save more lives,” Bancel said. 

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Reproductive rights in America

What's at stake as the supreme court hears idaho case about abortion in emergencies.

Selena Simmons-Duffin

The Supreme Court will hear another case about abortion rights on Wednesday. Protestors gathered outside the court last month when the case before the justices involved abortion pills. Tom Brenner for The Washington Post/Getty Images hide caption

The Supreme Court will hear another case about abortion rights on Wednesday. Protestors gathered outside the court last month when the case before the justices involved abortion pills.

In Idaho, when a pregnant patient has complications, abortion is only legal to prevent the woman's death. But a federal law known as EMTALA requires doctors to provide "stabilizing treatment" to patients in the emergency department.

The Biden administration sees that as a direct conflict, which is why the abortion issue is back – yet again – before the Supreme Court on Wednesday.

The case began just a few weeks after the justices overturned Roe v. Wade in 2022, when the federal Justice Department sued Idaho , arguing that the court should declare that "Idaho's law is invalid" when it comes to emergency abortions because the federal emergency care law preempts the state's abortion ban. So far, a district court agreed with the Biden administration, an appeals court panel agreed with Idaho, and the Supreme Court allowed the strict ban to take effect in January when it agreed to hear the case.

Supreme Court allows Idaho abortion ban to be enacted, first such ruling since Dobbs

The case, known as Moyle v. United States (Mike Moyle is the speaker of the Idaho House), has major implications on everything from what emergency care is available in states with abortion bans to how hospitals operate in Idaho. Here's a summary of what's at stake.

1. Idaho physicians warn patients are being harmed

Under Idaho's abortion law , the medical exception only applies when a doctor judges that "the abortion was necessary to prevent the death of the pregnant woman." (There is also an exception to the Idaho abortion ban in cases of rape or incest, only in the first trimester of the pregnancy, if the person files a police report.)

In a filing with the court , a group of 678 physicians in Idaho described cases in which women facing serious pregnancy complications were either sent home from the hospital or had to be transferred out of state for care. "It's been just a few months now that Idaho's law has been in effect – six patients with medical emergencies have already been transferred out of state for [pregnancy] termination," Dr. Jim Souza, chief physician executive of St. Luke's Health System in Idaho, told reporters on a press call last week.

Those delays and transfers can have consequences. For example, Dr. Emily Corrigan described a patient in court filings whose water broke too early, which put her at risk of infection. After two weeks of being dismissed while trying to get care, the patient went to Corrigan's hospital – by that time, she showed signs of infection and had lost so much blood she needed a transfusion. Corrigan added that without receiving an abortion, the patient could have needed a limb amputation or a hysterectomy – in other words, even if she didn't die, she could have faced life-long consequences to her health.

Attorneys for Idaho defend its abortion law, arguing that "every circumstance described by the administration's declarations involved life-threatening circumstances under which Idaho law would allow an abortion."

Ryan Bangert, senior attorney for the Christian legal powerhouse Alliance Defending Freedom, which is providing pro-bono assistance to the state of Idaho, says that "Idaho law does allow for physicians to make those difficult decisions when it's necessary to perform an abortion to save the life of the mother," without waiting for patients to become sicker and sicker.

Still, Dr. Sara Thomson, an OB-GYN in Boise, says difficult calls in the hospital are not hypothetical or even rare. "In my group, we're seeing this happen about every month or every other month where this state law complicates our care," she says. Four patients have sued the state in a separate case arguing that the narrow medical exception harmed them.

"As far as we know, we haven't had a woman die as a consequence of this law, but that is really on the top of our worry list of things that could happen because we know that if we watch as death is approaching and we don't intervene quickly enough, when we decide finally that we're going to intervene to save her life, it may be too late," she says.

2. Hospitals are closing units and struggling to recruit doctors

Labor and delivery departments are expensive for hospitals to operate. Idaho already had a shortage of providers, including OB-GYNS. Hospital administrators now say the Idaho abortion law has led to an exodus of maternal care providers from the state, which has a population of 2 million people.

Three rural hospitals in Idaho have closed their labor-and-delivery units since the abortion law took effect. "We are seeing the expansion of what's called obstetrical deserts here in Idaho," said Brian Whitlock, president and CEO of the Idaho Hospital Association.

Since Idaho's abortion law took effect, nearly one in four OB-GYNs have left the state or retired, according to a report from the Idaho Physician Well-Being Action Collaborative. The report finds the loss of doctors who specialize in high-risk pregnancies is even more extreme – five of nine full time maternal-fetal medicine specialists have left Idaho.

Administrators say they aren't able to recruit new providers to fill those positions. "Since [the abortion law's] enactment, St. Luke's has had markedly fewer applicants for open physician positions, particularly in obstetrics. And several out-of-state candidates have withdrawn their applications upon learning of the challenges of practicing in Idaho, citing [the law's] enactment and fear of criminal penalties," reads an amicus brief from St. Luke's health system in support of the federal government.

"Prior to the abortion decision, we already ranked 50th in number of physicians per capita – we were already a strained state," says Thomson, the doctor in Boise. She's experienced the loss of OB-GYN colleagues first hand. "I had a partner retire right as the laws were changing and her position has remained open – unfilled now for almost two years – so my own personal group has been short-staffed," she says.

ADF's Bangert says he's skeptical of the assertion that the abortion law is responsible for this exodus of doctors from Idaho. "I would be very surprised if Idaho's abortion law is the sole or singular cause of any physician shortage," he says. "I'm very suspicious of any claims of causality."

3. Justices could weigh in on fetal "personhood"

The state of Idaho's brief argues that EMTALA actually requires hospitals "to protect and care for an 'unborn child,'" an argument echoed in friend-of-the-court briefs from the U.S. Conference of Catholic Bishops and a group of states from Indiana to Wyoming that also have restrictive abortion laws. They argue that abortion can't be seen as a stabilizing treatment if one patient dies as a result.

Thomson is also Catholic, and she says the idea that, in an emergency, she is treating two patients – the fetus and the mother – doesn't account for clinical reality. "Of course, as obstetricians we have a passion for caring for both the mother and the baby, but there are clinical situations where the mom's health or life is in jeopardy, and no matter what we do, the baby is going to be lost," she says.

The Idaho abortion law uses the term "unborn child" as opposed to the words "embryo" or "fetus" – language that implies the fetus has the same rights as other people.

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Mary Ziegler , a legal historian at University of California - Davis, who is writing a book on fetal personhood, describes it as the "North Star" of the anti-abortion rights movement. She says this case will be the first time the Supreme Court justices will be considering a statute that uses that language.

"I think we may get clues about the future of bigger conflicts about fetal personhood," she explains, depending on how the justices respond to this idea. "Not just in the context of this statute or emergency medical scenarios, but in the context of the Constitution."

ADF has dismissed the idea that this case is an attempt to expand fetal rights. "This case is, at root, a question about whether or not the federal government can affect a hostile takeover of the practice of medicine in all 50 states by misinterpreting a long-standing federal statute to contain a hidden nationwide abortion mandate," Bangert says.

4. The election looms large

Ziegler suspects the justices will allow Idaho's abortion law to remain as is. "The Supreme Court has let Idaho's law go into effect, which suggests that the court is not convinced by the Biden administration's arguments, at least at this point," she notes.

Trump backed a federal abortion ban as president. Now, he says he wouldn't sign one

Whatever the decision, it will put abortion squarely back in the national spotlight a few months before the November election. "It's a reminder on the political side of things, that Biden and Trump don't really control the terms of the debate on this very important issue," Zielger observes. "They're going to be things put on everybody's radar by other actors, including the Supreme Court."

The justices will hear arguments in the case on Wednesday morning. A decision is expected by late June or early July.

Correction April 23, 2024

An earlier version of this story did not mention the rape and incest exception to Idaho's abortion ban. A person who reports rape or incest to police can end a pregnancy in Idaho in the first trimester.

• Abortion rights
• Supreme Court