title: Strategies for subgroup analysis in clinical trials.
authors.affiliation: Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, PA 15261.
authors.forename: H E
authors.initials: HE
authors.lastname: Rockette
authors.forename: R J
authors.initials: RJ
authors.lastname: Caplan
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011897:Random Allocation; D012004:Rectal Neoplasms / Q000473:pathology / Q000628:therapy*