A case–control study (also known as case–referent study) is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed …

Feb 4, 2023 · A case-control study is an experimental design that compares a group of participants possessing a condition of interest to a very similar group lacking that condition.

What is a Case Control Study? A case control study is a retrospective, observational study that compares two existing groups. Researchers form these groups based on the existence of a condition …

Case-control studies are one of the two main types of observational study designs in epidemiology. This design is desirable when exposure data are difficult to obtain, the disease is rare or has a long …

Jul 31, 2023 · A case-control study looks at people who already have a certain condition (cases) and people who don't (controls). By comparing these two groups, researchers try to figure out what might …

Mar 27, 2023 · Case-control studies, due to their typically retrospective nature, can be used to establish a correlation between exposures and outcomes, but cannot establish causation. These studies …

case-control study, in epidemiology, observational (nonexperimental) study design used to ascertain information on differences in suspected exposures and outcomes between individuals with a disease …

Jul 28, 2025 · Case control studies are observational because no intervention is attempted and no attempt is made to alter the course of the disease. The goal is to retrospectively determine the …

A case control study involves two groups: one with a health issue (Case) and another without (Control), matched by traits like age and gender. The design allows for examination of shared risk factors.

Dec 21, 2025 · A Case-Control Study is an observational study design that starts by identifying individuals with a particular outcome or disease (cases) and compares them to individuals without …