Table 4.

Comparison of ROC curves for the non-elderly.

Scoring system	AUC	95%CI	Optimal cut-off	Sensitivity	Specificity	Youden’s index
LODS	0.756	0.727–0.785	5.5	0.654	0.728	0.382
SAPS II	0.808	0.783–0.832	36.5	0.765	0.696	0.461
SIRS	0.584	0.552–0.616	3.5	0.440	0.684	0.124
SOFA	0.741	0.710–0.771	5.5	0.703	0.659	0.362