Journal
AMERICAN JOURNAL OF EPIDEMIOLOGY
Volume 179, Issue 7, Pages 875-883Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/aje/kwu004
Keywords
African Americans; obesity; prospective studies; racism; segregation; women; womens health
Categories
Funding
- Aetna Foundation [430483]
- Division of Cancer Control and Population Science, National Cancer Institute [CA058420]
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We assessed the relation of experiences of racism to the incidence of obesity and the modifying impact of residential racial segregation in the Black Womens Health Study, a follow-up study of US black women. Racism scores were created from 8 questions asked in 1997 and 2009 about the frequency of everyday racism (e.g., people act as if you are dishonest) and of lifetime racism (e.g., unfair treatment on the job). Residential segregation was measured by linking participant addresses to 2000 and 2010 US Census block group data on the percent of black residents. We used Cox proportional hazard models to estimate incidence rate ratios and 95 confidence intervals. Based on 4,315 incident cases of obesity identified from 1997 through 2009, both everyday racism and lifetime racism were positively associated with increased incidence. The incidence rate ratios for women who were in the highest category of everyday racism or lifetime racism in both 1997 and 2009, relative to those in the lowest category, were 1.69 (95 confidence interval: 1.45, 1.96; P-trend 0.01) and 1.38 (95 confidence interval: 1.15, 1.66; P-trend 0.01), respectively. These associations were not modified by residential segregation. These results suggest that racism contributes to the higher incidence of obesity among African American women.
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