Case-control is a type of epidemiological study design. Case-control studies are used to identify factors that may contribute to a medical condition by comparing subjects who have that condition the 'cases' with patients who do not have the condition but are otherwise similar the 'controls'. Case-control studies are a relatively inexpensive and frequently-used type of epidemiological study that can be carried out by small teams or individual researchers in single facilities in a way that more structured experimental studies often cannot be. They have pointed the way to a number of important discoveries and advances, but their retrospective , non-randomized nature limits the conclusions that can be drawn from them.
Case study method
How to Do a Case Study | Examples and Methods
Case study in psychology refers to the use of a descriptive research approach to obtain an in-depth analysis of a person, group, or phenomenon. A variety of techniques may be employed including personal interviews, direct-observation , psychometric tests , and archival records. In psychology case studies are most often used in clinical research to describe rare events and conditions, which contradict well established principles in the field of psychology. Distinct advantages and disadvantages are associated with the case study in psychology. The case study is sometimes mistaken for the case method , but the two are not the same.
Difference Between Case Study and Experiment
A case study involves an up-close, in-depth, and detailed examination of a particular case or cases, within a real-world context. Generally, a case study can highlight nearly any individual, group, organization, event, belief system, or action. Case study research has been extensively practiced in both the social and natural sciences. As with other social science methods, no single research design dominates case study research. Case studies can use at least four types of designs.
A case study is a research method that relies on a single case rather than a population or sample. When researchers focus on a single case, they can make detailed observations over a long period of time, something that cannot be done with large samples without costing a lot of money. Case studies are also useful in the early stages of research when the goal is to explore ideas, test, and perfect measurement instruments, and to prepare for a larger study.