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Socioeconomic status and incident type 2 diabetes mellitus: data from the Women's Health Study.

  • Author(s): Lee, Timothy C
  • Glynn, Robert J
  • Peña, Jessica M
  • Paynter, Nina P
  • Conen, David
  • Ridker, Paul M
  • Pradhan, Aruna D
  • Buring, Julie E
  • Albert, Michelle A
  • et al.
Abstract

Objectives

We prospectively examined whether socioeconomic status (SES) predicts incident type II diabetes (diabetes), a cardiovascular risk equivalent and burgeoning public health epidemic among women.

Methods

Participants include 23,992 women with Hb(A1c) levels <6% and no CVD or diabetes at baseline followed from February 1993 to March 2007. SES was measured by education and income while diabetes was self-reported.

Results

Over 12.3 years of follow-up, 1,262 women developed diabetes. In age and race adjusted models, the relative risk of diabetes decreased with increasing education (<2 years of nursing, 2 to <4 years of nursing, bachelor's degree, master's degree, and doctorate: 1.0, 0.7 [95% Confidence Interval (CI), 0.6-0.8], 0.6 (95% CI, 0.5-0.7), 0.5 (95% CI, 0.4-0.6), 0.4 (95% CI, 0.3-0.5); p(trend)<0.001). Adjustment for traditional and non-traditional cardiovascular risk factors attenuated this relationship (education: p(trend) = 0.96). Similar associations were observed between income categories and diabetes.

Conclusion

Advanced education and increasing income were both inversely associated with incident diabetes even in this relatively well-educated cohort. This relationship was largely explained by behavioral factors, particularly body mass index.

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