Fig. 4

Receiver operating characteristic (ROC) curves of the prediction models for 28-day mortality. The multivariate logistic regression model (probability of survival calculated by trauma and injury severity score [TRISS Ps] plus fibrinogen and D-dimer) was compared with TRISS Ps alone. In the logistic regression model, fibrinogen and D-dimer were categorical variables and their cut-off values were 130 mg/dL and 110 μg/mL, respectively. AUC area under the curve, DD D-dimer, Fbg fibrinogen, ROC receiver operating characteristic, TRISS Ps probability of survival by trauma and injury severity score