期刊
INTERNATIONAL JOURNAL OF CANCER
卷 139, 期 12, 页码 2738-2752出版社
WILEY
DOI: 10.1002/ijc.30410
关键词
breast cancer; diet; physical activity; body weight; African American
类别
资金
- National Cancer Institute [R01 CA058420, UM1 CA164974]
Adherence to cancer prevention recommendations has been associated with lower incidence of breast cancer in previous studies, but evidence in African American women is limited. This project evaluated the association between adherence to the World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) cancer prevention recommendations and breast cancer incidence among African American women. The Black Women's Health Study (analytic cohort = 49,103) is an ongoing prospective cohort study of African American women, ages 21-69 years at baseline (1995). Adherence scores for seven WCRF/AICR recommendations (adherent =1, partial adherence = 0.5, non-adherence = 0) were calculated using questionnaire data and summed for overall (maximum = 7) and diet only (maximum = 5) scores. Associations between baseline and time-varying adherence scores and breast cancer incidence (N51,827 incident cases through 2011) were evaluated using proportional hazards regression. In this cohort, 8.5% adhered > 4 recommendations. Adherence at baseline was not associated with breast cancer incidence. Higher overall time-varying adherence (per 0.5 point increase) was associated with lower breast cancer incidence (HR: 0.90, 95% CI: 0.84-0.96). Adherence to physical activity, sugar beverage and red and processed meat recommendations were also associated with reduced risk. Adherence to the WCRF/AICR recommendations was low and may be associated with lower breast cancer incidence in African American women.
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