Past oral contraceptive use and self-reported high blood pressure in postmenopausal women

BMC Public Health

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.

ISSN: 1471-2458