Is a subgroup effect believable? Updating criteria to evaluate the credibility of subgroup analyses
Xin Sun(Sichuan University), Matthias Briel(McMaster University), Stephen D. Walter(McMaster University), Gordon Guyatt(McMaster University)
Cited by 804
Abstract
How can we tell the difference between spurious and real subgroup effects? This article identifies new criteria and proposes a checklist for judging the credibility of subgroup analyses