Fig. 1From: The Restrictive Red Blood Cell Transfusion Strategy for Critically Injured Patients (RESTRIC) trial: a cluster-randomized, crossover, non-inferiority multicenter trial of restrictive transfusion in traumaStudy design. A total of 22 emergency medical centers participated in the RESTRIC trial. The participating institutions were randomized to implement either the restrictive or liberal RBC transfusion strategy at a ratio of 1:1. Hb hemoglobin, RBC red blood cell, RESTRIC Restrictive Transfusion Strategy for Critically Injured PatientsBack to article page