Table 2. Obesity indices and incidence of hypertension.

	Men						Women
	Range		Cases	No. of subjects	P value1	P trend2	Range		Cases	No. of subjects	P value	P trend
BMI (kg/m2)						<0.001						<0.001
Q1	<	20.7	42	357	-		<	20.8	44	436	-
Q2	20.7	-	65	370	0.021		20.8	-	59	458	0.092
Q3	22.6	-	81	349	<0.001		22.7	-	70	471	0.038
Q4	24.6	-	122	365	<0.001		25.0	-	125	447	<0.001
WC (cm)						<0.001						<0.001
Q1	<	75.0	41	329	-		<	72.0	41	416	-
Q2	75.0	-	71	368	0.018		72.0	-	61	461	0.343
Q3	81.0	-	82	383	0.012		78.0	-	79	482	0.054
Q4	87.1	-	116	361	<0.001		84.6	-	117	453	<0.001
WHR						<0.001						<0.001
Q1	<	0.835	58	359	-		<	0.802	45	451	-
Q2	0.835	-	71	356	0.191		0.802	-	68	446	0.181
Q3	0.879	-	81	369	0.057		0.844	-	83	478	0.108
Q4	0.916	-	100	357	0.002		0.889	-	102	437	0.009
WSR						<0.001						<0.001
Q1	<	0.453	39	366	-		<	0.460	43	454	-
Q2	0.453	-	71	355	0.006		0.460	-	60	453	0.213
Q3	0.487	-	87	357	<0.001		0.499	-	79	451	0.052
Q4	0.524	-	113	363	<0.001		0.545	-	116	454	<0.001

BMI, body mass index; WC, waist circumference; WHR, waist:hip ratio; WSR, waist:stature ratio.

¹ Poisson regression models were used, adjusting for age, smoking habits, alcohol consumption, place of residence and daily salt intake.

² Chi-square tests were used.