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Education, Income, and Incident Heart Failure in Post-Menopausal Women

Objectives The purpose of this study is to estimate the effect of education and income on incident heart failure (HF) hospitalization among post-menopausal women. Background Investigations of socioeconomic status have focused on outcomes after HF diagnosis, not associations with incident HF. We used...

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Bibliographic Details
Published in:Journal of the American College of Cardiology 2011-09, Vol.58 (14), p.1457-1464
Main Authors: Shah, Rashmee U., MD, Winkleby, Marilyn A., PhD, MPH, Van Horn, Linda, PhD, RD, Phillips, Lawrence S., MD, Eaton, Charles B., MD, MS, Martin, Lisa W., MD, Rosal, Milagros C., PhD, Manson, JoAnn E., MD, DrPH, Ning, Hongyan, MD, MS, Lloyd-Jones, Donald M., MD, ScM, Klein, Liviu, MD, MS
Format: Article
Language:English
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Summary:Objectives The purpose of this study is to estimate the effect of education and income on incident heart failure (HF) hospitalization among post-menopausal women. Background Investigations of socioeconomic status have focused on outcomes after HF diagnosis, not associations with incident HF. We used data from the Women's Health Initiative Hormone Trials to examine the association between socioeconomic status levels and incident HF hospitalization. Methods We included 26,160 healthy, post-menopausal women. Education and income were self-reported. Analysis of variance, chi-square tests, and proportional hazards models were used for statistical analysis, with adjustment for demographics, comorbid conditions, behavioral factors, and hormone and dietary modification assignments. Results Women with household incomes $50,000 a year (16.7/10,000 person-years; p < 0.01). Women with less than a high school education had higher HF hospitalization incidence (51.2/10,000 person-years) than college graduates and above (25.5/10,000 person-years; p < 0.01). In multivariable analyses, women with the lowest income levels had 56% higher risk (hazard ratio: 1.56, 95% confidence interval: 1.19 to 2.04) than the highest income women; women with the least amount of education had 21% higher risk for incident HF hospitalization (hazard ratio: 1.21, 95% confidence interval: 0.90 to 1.62) than the most educated women. Conclusions Lower income is associated with an increased incidence of HF hospitalization among healthy, post-menopausal women, whereas multivariable adjustment attenuated the association of education with incident HF.
ISSN:0735-1097
1558-3597
DOI:10.1016/j.jacc.2011.07.006