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. 2015 Jul 9;5:12002. doi: 10.1038/srep12002

Figure 6. Trial sequential analysis of blood transfusion.

Figure 6

A diversity adjusted information size of 4423 patients was calculated using a two side α = 5%, β = 20% (power 80%), D2 = 0%, an anticipated relative risk increase of 35% and an event propotion of 5% in the control arm. Trials with no events were included in the study with a constant continuity correction of 1.