Table 4.

Performance measures of the prognostic models on the INRO-PH validation dataset

Performance measures (prediction of six-month unfavourable outcome)	AUC VAL (CI 95%)	AUC REFIT	Slope	Intercept	P- value*
IMPACT Core Model	0.8 (0.76-0.84)	0.82	1.073	-0.354	0.93
IMPACT Extended Model	0.81 (0.77-0.86)	0.87	1.061	-0.506	0.65
CRASH Basic Model	0.8 (0.75-0.84)	0.82	0.871	-0.505	Reference
Nijmegen Demographic and Clinical Model	0.82 (0.77-0.87)	0.83	0.865	-0.738	0.47
Performance measures (prediction of six-month mortality)	AUC VAL	AUC REFIT	Slope	Intercept	P- value*
IMPACT Core Model	0.84 (0.8-0.87)	0.86	1.381	-0.211	0.55
IMPACT Extended Model	0.85 (0.81-0.89)	0.9	1.323	-0.243	0.32
CRASH Basic Model	0.82 (0.77-0.87)	0.85	0.866	0.207	Reference
Nijmegen Demographic and Clinical Model	0.86 (0.82-0.91)	0.87	0.984	-0.289	0.19

AUC _VAL = Area under the curve of external validation; AUC _REFIT = Area under the curve of the refitted models; CI = Confidence Interval.

*P value refers to difference between AUC _VAL: The model with the lowest AUC_VAL was taken as a reference and tested with all other AUC_VAL.