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. 2015 Aug 24;5(8):e009460. doi: 10.1136/bmjopen-2015-009460

FigureĀ 3.

FigureĀ 3

Precision of the cumulative pooled estimates for the effect of tranexamic acid in cardiac surgery described by the SE of the risk ratios (RRs; left hand axis) and the number of trials (5-year moving averages, right hand axis) initiated per year.