Table 4.

The P-value of the DeLong's test compared the significant difference between performance of models with different stepped feature sets of the PLAGH-ERD and time windows

	XGBoost	LR	P value
0.5 h in advance
VS	0.935	0.875	<0.001
1 h in advance
VS	0.927	0.878	0.028
VS + BR	0.95	0.889	<0.001
VS + BG + BR	0.968	0.93	<0.001
2 h in advance
VS	0.937	0.866	<0.001
VS + BR	0.957	0.905	<0.001
VS + BG + BR	0.934	0.912	<0.001
3 h in advance
VS + BR	0.946	0.919	0.016
VS + BG + BR	0.957	0.905	<0.001

BG, blood gas; PLAGH-ERD, the PLA General Hospital Emergency Rescue Database; VS, vital signs.