title: Is a subgroup effect believable? Updating criteria to evaluate the credibility of subgroup analyses.
authors.affiliation: Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada.
authors.forename: Xin
authors.initials: X
authors.lastname: Sun
authors.forename: Matthias
authors.initials: M
authors.lastname: Briel
authors.forename: Stephen D
authors.initials: SD
authors.lastname: Walter
authors.forename: Gordon H
authors.initials: GH
authors.lastname: Guyatt
mesh_terms: D003627:Data Interpretation, Statistical; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic; D012107:Research Design