Table 2.

Cox regression models for hypertension in men and women

Variables	β	HR (95% CI)	P-value
M1 model:
Age, years	0.2650	1.3035 (1.1597, 1.4651)	<0.0001
SBP, mmHg	0.0554	1.0570 (1.0429, 1.0712)	<0.0001
DBP, mmHg	0.1300	1.1388 (1.0532, 1.2314)	0.0011
WC, cm	0.0626	1.0646 (1.0095, 1.1228)	0.0209
hypertension paternal history (Yes vs No)	0.3441	1.4107 (1.1463, 1.7361)	0.0012
Age × WC*	-0.0011	0.9989 (0.9980, 0.9999)	0.0264
Age × DBP†	-0.0019	0.9981 (0.9967, 0.9995)	0.0067
W1 model:
Age, years	0.3430	1.4092 (1.2722, 1.5608)	<0.0001
SBP, mmHg	0.0525	1.0539 (1.0425, 1.0654)	<0.0001
DBP, mmHg	0.1956	1.2161 (1.1356, 1.3023)	<0.0001
WC, cm	0.0807	1.0840 (1.0347, 1.1357)	0.0007
Higher vegetables and fruit intake (Yes vs No)	-0.1345	0.8742 (0.7375, 1.0363)	0.1212
hypertension paternal history (Yes vs No)	0.2189	1.2447 (1.0417, 1.4872)	0.0159
Age × WC*	-0.0013	0.9987 (0.9978, 0.9995)	0.0020
Age × DBP†	-0.0026	0.9974 (0.9962, 0.9986)	<0.0001
W2 model:
Age, years	0.3413	1.4068 (1.2703, 1.5579)	<0.0001
SBP, mmHg	0.0525	1.0539 (1.0425, 1.0654)	<0.0001
DBP, mmHg	0.1943	1.2144 (1.1340, 1.3005)	<0.0001
WC, cm	0.0799	1.0832 (1.0338, 1.1349)	0.0008
Higher vegetables and fruit intake (Yes vs No)	-0.1356	0.8732 (0.7366, 1.0351)	0.1181
hypertension paternal history (Yes vs No)	0.2094	1.2330 (1.0318, 1.4734)	0.0212
Age × WC*	-0.0014	0.9986 (0.9977, 0.9995)	0.0018
Age × DBP†	-0.0026	0.9974 (0.9962, 0.9986)	<0.0001
HDL-c, mmol/L	-0.2807	0.7752 (0.5822, 0.9796)	0.0344

SBP – systolic blood pressure, DBP – diastolic blood pressure, HDL-c – high-density lipoprotein cholesterol, WC – waist circumference, HR – hazard ratio, M1 – men office-based model, W1 – women office-based model, W2 – women laboratory-based model, CI – confidence interval

*Interaction item of age with WC.

†Interaction item of age with DBP.