Mortality by category of predicted risk of death and red blood cell transfusion (adjusted analysis).

Interaction between RBC transfusion and predicted risk of death on the OR, p0.0001 (chi-square = 188 with one degree of freedom).aRisk group determined according to model published in [10].bOR adjusted for country as well as use of platelets (n = 806), fresh frozen plasma (n = 2,633), and cryoprecipitate (n = 392). In total, 2,726 (13.5%) patients received one of these blood products.