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Oxford University Press, American Journal of Epidemiology, 2(177), p. 142-151, 2012

DOI: 10.1093/aje/kws200

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Endometrial Cancer Risk Factors by 2 Main Histologic Subtypes

This paper is available in a repository.
This paper is available in a repository.

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Abstract

On the basis of clinical and pathologic criteria, endometrial carcinoma has been distinguished as Types I (mainly endometrioid) and II (nonendometrioid). Limited data suggest that these subtypes have different risk factor profiles. The authors prospectively evaluated risk factors for Types I (n = 1,312) and II (n = 138) incident endometrial carcinoma among 114,409 women in the National Institutes of Health (NIH)-AARP Diet and Health Study (1995–2006). For individual risk factors, relative risks were estimated with Cox regression by subtype, and Pheterogeneity was assessed in case-case comparisons with Type I as the referent. Stronger relations for Type I versus Type II tumors were seen for menopausal hormone therapy use (relative risk (RR) of 1.18 vs. 0.84; Pheterogeneity = 0.01) and body mass index of ≥30 vs.