Percentage of clinically significant postoperative events requiring intensive care unit admission for the multivariate risks factors identified. Clinically significant postoperative event = cardiorespiratory and/or hematological event. The multivariate risk factors include body weight <10 kg, ASA class 3 or 4, packed erythrocyte transfusion >60 ml/kg, intraoperative complication, hemostatic blood product transfusion (platelets, fresh-frozen plasma, and/or cryoprecipitate), and tranexamic acid (TXA) not given. ASA 3 or 4 = American Society of Anesthesiologists physical status 3 (a patient with severe systemic disease) or 4 (a patient with severe systemic disease that is a constant threat to life); Hemo. Products = platelets, fresh-frozen plasma, and/or cryoprecipitate; Intraop. = intraoperative; Intraop. Comp. = intraoperative complication (refer to the appendix for detailed definition); Packed Erythro (PRBC) = intraoperative packed erythrocyte transfusion.