title: Statistics notes. Interaction 1: Heterogeneity of effects.
authors.affiliation: Centre for Statistics in Medicine, Institute of Health Sciences, Oxford.
authors.forename: D G
authors.initials: DG
authors.lastname: Altman
authors.forename: J N
authors.initials: JN
authors.lastname: Matthews
mesh_terms: D002986:Clinical Trials as Topic; D003627:Data Interpretation, Statistical; D006801:Humans; D013223:Statistics as Topic