Relative risk of ischemic heart disease first event and mortality by marital status, in subgroups. Relative risks (RRs) presented with 95% confidence intervals (95% CI). The dotted line represents the RR of IHD mortality for all women, comparing partnered to unpartnered. RRs are adjusted as appropriate for age, region, area deprivation, age left school, highest educational qualification, smoking, alcohol intake, strenuous exercise, body mass index, hormone replacement therapy use, sleep duration, happiness, treatment for depression, parity, employment and participation in group activities. IHD, ischemic heart disease.