Discrete event simulation (DES) model
The DES model was developed using R Studio software (version 1.1.463). The model compares OR efficiency using aggressive warming or routine warming for the same simulated schedule in an OR on 63 working days over 3 months in a hypothetical hospital of the same size as PUMCH in China. The procedure flow on the day of the operation is shown in Diagram of procedural flow in an operating room.Input and output of the DES model for OR efficiency in 3 months.