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Family history of myocardial infarction predicts incident coronary heart disease in postmenopausal women with diabetes: the Women's Health Initiative Observational Study
Journal article

Family history of myocardial infarction predicts incident coronary heart disease in postmenopausal women with diabetes: the Women's Health Initiative Observational Study

Rongling Li, Mary J O'Sullivan, Jennifer Robinson, Monika M Safford, David Curb and Karen C Johnson
Diabetes/metabolism research and reviews, Vol.25(8), pp.725-732
11/2009
DOI: 10.1002/dmrr.1010
PMCID: PMC4478605
PMID: 19780066
url
http://doi.org/10.1002/dmrr.1010View
Open Access

Abstract

Diabetes is a risk factor for coronary heart disease (CHD) but CHD does not occur in all diabetic individuals. The goal of this study was to assess the relationship between family history of myocardial infarction (MI) and incident CHD in diabetic postmenopausal women. We conducted a prospective cohort study among 2642 diabetic postmenopausal women without CHD at baseline in the Women's Health Initiative Observational Study. Family history was defined as a proband report of MI in first-degree relatives. Incident CHD was defined as non-fatal MI, coronary revascularization, or CHD death. During 7.3 ( +/- 1.8) years of follow-up, 14.3% of the participants had incident CHD. The risk of incident CHD was 50% higher (HR = 1.50, 95% CI: 1.20-1.87, p = 0.0003) in those with a family history of an MI in at least one first-degree relative, and 79% higher (HR = 1.79, 95% CI: 1.36-2.35, P < 0.0001) if two or more first-degree relatives had an MI, compared to participants without a family history, after adjustment for covariates. The CHD risk increased with elevated systolic blood pressure (SBP) (HR = 1.01, 95% CI: 1.003-1.02, p = 0.001) but decreased with elevated diastolic BP (HR = 0.98, 95% CI: 0.97-0.999, p = 0.005) and with two or more episodes per week of physical activity (HR = 0.70, 95% CI: 0.52-0.93, p = 0.02). The results suggest that a family history of MI predicts CHD in diabetic postmenopausal women. Close attention should be paid to BP control and physical activity in these women.
Blood Pressure Myocardial Infarction - genetics Predictive Value of Tests Genetic Predisposition to Disease Prospective Studies Diabetes Complications - physiopathology United States Humans Middle Aged Risk Factors Diabetes Mellitus - drug therapy Coronary Disease - etiology Family Health Statistics as Topic Motor Activity Coronary Disease - prevention & control Postmenopause Female Surveys and Questionnaires Aged

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