title: Investigating underlying risk as a source of heterogeneity in meta-analysis.
authors.forename: H
authors.initials: H
authors.lastname: van Houwelingen
authors.forename: S
authors.initials: S
authors.lastname: Senn
mesh_terms: D001499:Bayes Theorem; D006801:Humans; D015201:Meta-Analysis as Topic; D012306:Risk; D016896:Treatment Outcome