Fig. 4From: Efficacy of plasma exchange for antineutrophil cytoplasmic antibody-associated systemic vasculitis: a systematic review and meta-analysisForrest plots of primary outcomes between the PE and pulse steroid treatment groups. Regarding the timing of outcome measurement in this figure, mortality and adverse events are for the overall observational period, and clinical remission (BVAS) is at 1 year after the allocation. See Additional file 5 for other data. In this figure, as adverse events, data of only severe or life-threatening cases are displayed. Abbreviations: PE, plasma exchange; BVAS, Birmingham Vasculitis Activity ScoreBack to article page