We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleConfidence intervals and statistical testing for ratio measures of percent change.AuthorsWinston CA; Hill AN; Chen MP; Shang N; Becerra JEPublicationStatistics in medicine, 2012, Vol 31, Issue 27, p3295ISSN1097-0258Publication typearticleDOI10.1002/sim.5340