Table 5.

Comparison of sensitivity, specificity and AUC of ISS, NISS and RTS in optimal cut-off points based on ROC curve.

	Score	Cut-off	AUC	95% CI	Sensitivity (%)	Specificity (%)
Mortality	ISS	≤15	0.82	0.69–0.95	92	65
	NISS	≤17.5	0.79	0.64–0.94	91	65
	RTS	≥4.8	0.99	0.99–1	99	64
Length of hospital stay	ISS	≤12.5	0.72	0.67–0.76	97	80
	NISS	≤15.5	0.70	0.66–0.74	98	78
	RTS	≥5.06	0.55	0.50–0.59	97	98
Need for surgery	ISS	≤16.5	0.94	0.90–0.98	95	69
	NISS	≤17.5	0.93	0.87–0.97	94	81
	RTS	≥7	0.77	0.67–0.86	91	50