We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleConfidence intervals for the number needed to treat.AuthorsAltman, D GPublicationBMJ (Clinical research ed.), 1998, Vol 317, Issue 7168, p1309ISSN0959-8138Publication typeJournal ArticleDOI10.1136/bmj.317.7168.1309