#case control study

A case control study is a type of research that looks at people with a certain condition (cases) and compares them to people without it (controls). It aims to find possible causes or risk factors. The documents here cover the basics of case control studies, their design, strengths, and weaknesses. They also provide examples of case control studies on topics like poverty and visual impairment, and phenylpropanolamine and stroke risk. Some documents guide you through appraising and understanding these studies.