Table 6.

ROC curve for predicting mortality using age, WBC, and procalcitonin.

Parameter	AUC (95% C.I.)	Std. Error	p	Cut-Off	Se	Sp
Age	0.900 (0.806–0.994)	0.048	0.008	74	100%	76.9%
WBC	0.858 (0.719–0.996)	0.071	0.017	21,570	75%	90.8%
Procalcitonin	0.873 (0.707–1.000)	0.085	0.013	10.68	75%	90.8%