Objective
The aim of this study was to determine the prevalence of hypertension in mid-life women, characterize the association between high sensitivity C-reactive protein (hs-CRP) and hypertension in women, and describe differences in hypertension prevalence by menopausal stage.
Methods
We included 1625 women, aged 43-55 years, with measurements of hs-CRP and detailed reproductive histories in the Coronary Artery Risk Development in Young Adults Study at follow up year 25. Prevalent hypertension was defined as a systolic blood pressure of 140 mm hg, or diastolic blood pressure of 90 mm hg, or greater or use of antihypertensive medications. Logistic regression was used for analysis.
Results
The prevalence of hypertension was 25.8 %, 37.8 %, and 39.0 % in premenopausal, perimenopausal and postmenopausal women respectively. The median (25th, 75th percentiles) of hs-CRP was 3.08 (1.12, 7.98) μg/ml and 1.18 (0.48, 3.15) μg/ml in women with and without hypertension respectively. After adjusting for confounders, metabolic factors and body mass index (BMI), a doubling (100% increment) in hs-CRP levels was significantly associated with hypertension in premenopausal (1.27 [1.01 - 1.59]) but not in perimenopausal (1.12 [0.99 - 1.27]) or postmenopausal (1.09 [0.95 - 1.26]) women.
Conclusions
Hypertension was common in mid-life women. The association of hs-CRP and hypertension was consistent across menopausal stages. The association of hs-CRP with hypertension was independent of BMI in premenopausal but not in perimenopausal or postmenopausal women.