P0541 Placebo rates in randomised clinical trials of Ulcerative Colitis: An individual patient data meta-analysis

Abstract Background Information on placebo rates is important for designing clinical trials. We aimed to assess placebo rates and associated factors using individual patient data from multiple randomised clinical trials in ulcerative colitis. Methods We conducted a meta-analysis of individual participant-level data from nine randomised trials using Vivli and Yale University Open Data Access data-sharing platforms. Phase 2 and 3 …