title: Subgroup analysis in clinical trials.
authors.affiliation: Department of Physiology (F-13), University of Sydney, Sydney, NSW 2006, Australia. davidc@physiol.usyd.edu.au
authors.forename: David I
authors.initials: DI
authors.lastname: Cook
authors.forename: Val J
authors.initials: VJ
authors.lastname: Gebski
authors.forename: Anthony C
authors.initials: AC
authors.lastname: Keech
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data*; D003627:Data Interpretation, Statistical; D006801:Humans; D012107:Research Design