Table 5.

Prognostic performance of PERFORM, sPESI, and PESI.

Index	Cut-off value	The maximum Youden's index	Sensitivity	Specificity	PPV	NPV
Whole
PERFORM	5	0.450	0.857	0.593	0.142	0.981
sPESI	1	0.328	0.914	0.414	0.109	0.984
PESI	92	0.415	0.914	0.501	0.125	0.987
Training
PERFORM	5	0.379	0.783	0.596	0.129	0.973
sPESI	1	0.260	0.870	0.391	0.098	0.975
PESI	92	0.343	0.870	0.474	0.112	0.979
Validation
PERFORM	7	0.730	0.833	0.897	0.400	0.985
sPESI	1	0.462	1	0.462	0.133	1
PESI	100	0.697	1	0.697	0.214	1