The influence of study characteristics on reporting of subgroup analyses in randomised controlled trials: systematic review.
Sun X, Briel M, Busse JW, You JJ, Akl EA, Mejza F, Bala MM, Bassler D, Mertz D, Diaz-Granados N, Vandvik PO, Malaga G, Srinathan SK, Dahm P, Johnston BC, Alonso-Coello P, Hassouneh B, Truong J, Dattani ND, Walter SD, Heels-Ansdell D, Bhatnagar N, Altman DG, Guyatt GH.
Sun X, et al. Among authors: walter sd.
BMJ. 2011 Mar 28;342:d1569. doi: 10.1136/bmj.d1569.
BMJ. 2011.
PMID: 21444636
Free PMC article.
Review.