We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleStatistics Notes: Concealing treatment allocation in randomised trialsAuthorsAltman, D. G; Schulz, K. FPublicationBMJ, 2001, Vol 323, Issue 7310, p446ISSN0959-8138Publication typearticleDOI10.1136/bmj.323.7310.446