Table 3.

Odds ratios (95% CIs) for hypertension related to age at menarche by different combinations of modifiable risk lifestyles among young women

Joint Exposure			Hypertension
Age at menarche (years)	Modifiable risk lifestyles	Total (n)	n	OR	95% CI
≤12	No risk lifestyles	2747	18	0.53	0.31, 0.84
13		6113	89	1.07	0.83, 1.39
14		13,216	181	1.00	Ref
15		4640	72	1.11	0.84, 1.46
≥16		2139	63	2.07	1.54, 2.76
≤12	One risk lifestyle	2582	90	2.76	2.09, 3.60
13		4001	125	2.25	1.78, 2.85
14		6667	207	2.16	1.76, 2.66
15		2733	98	2.51	1.95, 3.22
≥16		1701	61	2.54	1.87, 3.41
≤12	Two risk lifestyles	2656	156	5.24	4.11, 6.69
13		2347	113	3.98	3.07, 5.14
14		2212	92	3.32	2.54, 4.33
15		1180	48	3.18	2.24, 4.41
≥16		897	47	3.81	2.67, 5.32
≤12	Three risk lifestyles	910	141	12.36	9.51, 16.05
13		580	84	11.09	8.21, 14.87
14		527	59	8.62	6.20, 11.85
15		219	22	7.20	4.35, 11.40
≥16		172	18	7.64	4.39, 12.57
≤12	All four risk lifestyles	40	7	13.21	5.17, 29.36
13		21	3	9.45	2.16, 29.08
14		23	2	7.13	1.13, 24.80
15		5	1	12.23	0.61, 83.43
≥16		9	1	6.49	0.35, 36.53

Modifiable risk lifestyles comprised being overweight or obese, psychological stress, passive smoking, and imbalanced diet. The model was adjusted for age at enrolment, smoking status, drinking status, education, occupation, region, parity, oral contraceptive use, diabetes, and family history of hypertension