We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleUnderstanding controlled trials. Why are randomised controlled trials important?AuthorsSibbald, B; Roland, MPublicationBMJ (Clinical research ed.), 1998, Vol 316, Issue 7126, p201ISSN0959-8138Publication typeJournal ArticleDOI10.1136/bmj.316.7126.201