title: Subgroup analyses: how to avoid being misled.
authors.affiliation: BMJ, London WC1H 9JR. jfletcher@bmj.com
authors.forename: John
authors.initials: J
authors.lastname: Fletcher
mesh_terms: D003627:Data Interpretation, Statistical; D053208:Kaplan-Meier Estimate; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*