Epidemiologic observational studies such as cohort studies are essential in medicine and life sciences to investigate health and diseases, risk factors as well as disease progression and consequences. This entails the need for informative data quality indicators and tools to assess and report data quality. This site provides a data quality framework for epidemiologic studies with a focus on primary data collections along statistical implementations to facilitate the applications.

Note. This site is continuously updated based, taking community feedback into account. Current status: Beta 0.95