Table 3.

The odds of having high blood pressure depending on duration of hormonal contraception use compared to never use, stratified by current age

Current age	HC use	n	% HBP	OR (99% CI) †	P value
<58 years	Never	1411	8.9	1.0
	<5 years	2677	9.7	1.0 (0.7 to 1.4)	0.99
	5 to 10 years	3903	10.8	1.2 (0.9 to 1.6)	0.24
	>10 years	4067	11.0	1.2 (0.9 to 1.6)	0.22
58 to 66 years	Never	1586	20.7	1.0
	<5 years	2930	18.7	0.9 (0.7 to 1.1)	0.05
	5 to 10 years	3636	19.7	0.9 (0.7 to 1.1)	0.17
	>10 years	2647	20.4	0.9 (0.8 to 1.2)	0.42
≥67 years	Never	5512	33.2	1.0
	<5 years	1817	33.9	1.0 (0.8 to 1.1)	0.38
	5 to 10 years	2169	33.7	0.9 (0.8 to 1.1)	0.23
	>10 years	1934	32.5	0.9 (0.8 to 1.0)	0.04

HBP = High Blood Pressure; OR = Odds Ratio; CI = Confidence Interval. ^†Adjusted for income, country of origin, BMI, smoking, alcohol, exercise, family history of high blood pressure, menopausal hormone therapy use, number of children, whether they breastfed, and age of menopause.