Table 2.

Comparison of ROC curves for all cases in the cohort study.

Scoring system	AUC	95%CI	Optimal cut-off	Sensitivity	Specificity	Youden’s index
LODS	0.733	0.716–0.751	5.5	0.639	0.704	0.343
SAPS II	0.787	0.772–0.802	46.5	0.628	0.798	0.426
SIRS	0.597	0.578–0.615	2.5	0.812	0.325	0.137
SOFA	0.688	0.669–0.706	5.5	0.615	0.668	0.283