Is retrospective cohort study the same as case-control study?
Is retrospective cohort study the same as case-control study? Retrospective cohort studies are NOT the same as case-control studies. In retrospective cohort studies, the exposure and outcomes have already happened. Therefore, cohort studies are good for assessing prognosis, risk factors and harm. The outcome measure in cohort studies is usually a risk ratio / relative risk (RR). What is the difference between a case-control and cohort study? Whereas the cohort study is concerned with frequency of disease in exposed and non-exposed individuals, the case-control study is concerned with the frequency and amount of exposure in subjects with a specific disease...