Figure 4.

Adjusted hazard ratios (HRs) for total cardiovascular disease (CVD) mortality, incident ischemic heart disease (IHD), and incident stroke by time since menopause, among postmenopausal women only. A, CVD mortality. B, Incident IHD. C, Incident stroke. Models were stratified by age and study area and adjusted for education, household income, smoking, alcohol drinking, blood pressure, body mass index, physical activity, prior diabetes mellitus status, age at menarche, parity, abortion, age at first birth, breastfeeding duration per child, and oral contraceptive use. Premenopausal women were used as the reference category. Squares represent the HR with area inversely proportional to the variance of the log HR. Vertical lines indicate the corresponding 95% confidence intervals (CIs). The numbers above the CIs are HRs and those below are the numbers of events studied.