Table 4.

Characteristics of the ROC curve

Systolic blood pressure	Sensitivity (%)	Specificity (%)	ROC characteristics
JNC VII (≥140 mmHg)	98.1	92	Area under ROC=0.984
ROC curve cut of value at 139 mmHg	100	91	SE=0.005
			P<0.0001
			95% CI = (0.973, 0.994)
Diastolic blood pressure
JNC VII (≥90 mmHg)	82.6	93	Area under ROC=0.97
ROC curve cut of value at 86 mmHg	95.7	90	SE=0.01
			P=<0.0001
			95% CI = (0.950, 0.989)