The map
Every study, by what it measured.
Trial or meta-analysisCohortSurvey, case or reviewEach dot is one study on one outcome. 29 studies, 49 dots.
The ladder
Most evidence sits on the lowest rungs.
Studies by design, strongest first.
29 studies from PubMed and arXiv. Levels adapted from Oxford CEBM. Method
Explore 29 studies →