Predictive model integrating dynamic parameters for massive blood transfusion in major trauma patients: The Dynamic MBT score.

Background: Currently existing predictive models for massive blood transfusion in major trauma patients had limitations for sequential evaluation of patients and lack of dynamic parameters.

Objective: To establish a predictive model for predicting the need of massive blood transfusion major trauma patients, integrating dynamic parameters.

Design: Multi-center retrospective cohort study.