Table 3.

Comparison of ROC curves (before PSM).

Scoring system	AUC	95%CI	Optimal cut-off	Sensitivity (%)	Specificity (%)	Youden’s index
LODS	0.867	0.834 ~ 0.895	6.0	70.19	87.80	0.5799
OASIS	0.827	0.792 ~ 0.859	38.0	67.31	85.89	0.5319
SAPS II	0.894	0.864 ~ 0.919	37.0	89.42	74.40	0.6382

AUC area under curves, LODS Logistic Organ Dysfunction System, OASIS Oxford Acute Severity of Illness Score, SAPS II Simplified Acute Physiology Score.