Development and Validation of a Dynamic Prediction Model for Massive Hemorrhage in Trauma

Table 2

Comparison of the models’ effects in 1 h, 2 h, and 3 h groups.

	ACC	SEN	SPE	PPV	NPV	F1	AUC
1 h group	0.683 ± 0.029	0.729 ± 0.128	0.677 ± 0.036	0.235 ± 0.030	0.949 ± 0.024	0.355 ± 0.049	0.763 ± 0.074
2 h group	0.687 ± 0.034	0.750 ± 0.161	0.678 ± 0.050	0.240 ± 0.037	0.954 ± 0.026	0.362 ± 0.059	0.775 ± 0.063
3 h group	0.685 ± 0.032	0.714 ± 0.135	0.681 ± 0.033	0.234 ± 0.044	0.946 ± 0.025	0.352 ± 0.065	0.756 ± 0.055

ACC: accuracy; SEN: sensitivity; SPE: specificity; PPV: positive predictive value; NPV: negative predictive value; F1: F1 score; AUC: area under the curve.