Cut-off of body mass index and waist circumference to predict hypertension in Indian adults

Table 1 Characteristics of the study population

Parameters	Men(n =356)	Women(n =445)	Total(n = 801)
Age (yr)	36.4 ± 13.8	34.8 ± 11.6	35.5 ± 12.6
Weight (kg)	58.6 ± 11.5	51.7 ± 11.7	54.8 ± 12.1
Height (cm)	165.3 ± 7.1	151.7 ± 5.9	157.7 ± 9.3
BMI (kg/m2)	21.4 ± 3.9	22.4 ± 4.6	21.9 ± 4.3
Waist circumference (cm)	78.9 ± 11.0	74.4 ± 11.1	76.5 ± 11.3
SBP (mmHg)	127 ± 16	122 ± 18	124 ± 17
DBP (mmHg)	82 ± 9	78 ± 10	80 ± 9

Values are written as mean ± SD. SBP: Systolic blood pressure; DBP: Diastolic blood pressure; BMI: Body mass index.

Table 2 Receiver operating characteristic analysis for body mass index and waist circumference as predictor of hypertension in men and women

Indicators	BMI in men	BMI in women	WC in men	WC in women
Area under the ROC curve	0.714	0.821	0.784	0.815
Standard error	0.0312	0.0237	0.0286	0.0284
95%CI	0.664 to 0.760	0.783 to 0.856	0.737 to 0.826	0.776 to 0.850
z statistic	6.857	13.572	9.922	11.117
Significance level P (Area = 0.5)	< 0.0001	< 0.0001	< 0.0001	< 0.0001
Youden index J	0.3611	0.5294	0.4912	0.5542
Associated criterion	> 24.5	> 24.9	> 83	> 78

BMI: Body mass index; ROC: Receiver operating characteristic.