Table 6.

ROC curve parameters

Maker	The area under the curve	95% CI	Cut-off value	(Level of) sensitivity	Specificity	Accuracy	Jordon index (math.)
RISK1	0.937	0.900-0.975	-2.2165	86.89%	87.10%	86.91%	73.98%
RISK2	0.911	0.849-0.973	-1.857	83.61%	90.32%	84.36%	73.93%

Note: RISK1, a combined clinical-laboratory index; RISK2, a separate laboratory index; ROC, receiver operating characteristic.