February 02, 2011
Is a Subgroup Claim Believable?: A User's Guide to Subgroup Analyses in the Surgical Literature
J Bone Joint Surg Am, 2011 Feb 02;93(3):e8 1-9. doi: 10.2106/JBJS.I.01555
; Xin Sun, PhD; Diane Heels-Ansdell, MSc; Stephen D. Walter, PhD; Gordon Guyatt, MD, MSc; Sheila Sprague, MSc; Mohit Bhandari, MD, MSc; David Sanders, MD; Emil Schemitsch, MD; Paul Tornetta, III, MD; Marc Swiontkowski, MD