Population health

The relevance of case-control studies when working with cohort data

When a researcher has data from a defined cohort of individuals, such as data from an ongoing multi-centered study or a disease registry, when does it make sense to conduct a case-control study?

The least talked about study design - the ecological study

This week, I’ve been going over ecological studies in epidemiology. In my research area, ecological studies are rarely done – the prominent study designs are the usual suspects: retrospective, prospective, and case-control.

Descriptive epidemiologic studies

What are they and are they useful?