Background/Aims: Some previous studies have reported that hysterectomy predicts increased prevalence of cardiovascular diseases, but the findings are disputed. We aimed to examine associations between hysterectomy and cardiovascular disease in a Norwegian cross-sectional health study. Methods: The data were obtained from the population-based cross-sectional Nord-Trøndelag Health Study (The HUNT-2 Study). Of 46,709 invited females, 35,280 (76%) participated; 939 (3%) reported hysterectomy without oophorectomy (exposed women). Each exposed woman was age-matched with four randomly chosen women (n = 3,756) without hysterectomy or oophorectomy. Oophorectomy and hysterectomy status was self-reported by the women. Hazard ratio for cardiovascular diseases was calculated by Cox regression analyses with hysterectomy as a time-dependent covariate. Results: Median time since hysterectomy was 14 years (range 0–56 years). We calculated a significantly larger cumulative probability of cardiovascular diseases after hysterectomy with a hazard ratio of 1.92, 95% CI (1.51–2.38) after adjustments for cardiovascular risk factors (diabetes, age, use of hormonal replacement therapy and positive family history of myocardial infarction). Conclusion: Women had a significantly increased risk of cardiovascular diseases after hysterectomy compared to age-matched controls. Studies with longitudinal design and confirmed medical outcome data are needed.

Keywords:
Cardiovascular disease, Epidemiology, Hysterectomy, Biostatistics
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2012
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