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Associations between contextual factors and colorectal cancer screening in a racially and ethnically diverse population in TexasWilliam A Calo et al. Cancer Epidemiol. 2015 Dec.
. 2015 Dec;39(6):798-804. doi: 10.1016/j.canep.2015.09.012. Epub 2015 Oct 18. AffiliationsItem in Clipboard
AbstractBackground: Colorectal cancer is the third most commonly diagnosed cancer and the third leading cause of cancer death in the United States. Increased attention has been given to understanding the role of local contexts on cancer screening behaviors. We examined the associations between multiple tract-level socioeconomic measures and adherence to colorectal cancer screening (CRCS) in Harris County and the City of Houston, Texas.
Methods: We conducted a cross-sectional multilevel study linking individual-level data on CRCS from the 2010 Health of Houston Survey with contextual data from the U.S. Census and the U.S. Department of Housing and Urban Development. We examined tract-level poverty, education, employment, income inequality, and foreclosure measures across 543 Census tracts. Analyses were limited to individuals aged 50-74 years (N=1720).
Results: Overall, 58.0% of the sample was adherent to any recommended CRCS test. In bivariate analyses, increasing levels of area poverty, low education, unemployment, and foreclosures were associated with lower odds of adherence to CRCS. After controlling for individual-level covariates, only tract-level unemployment remained associated with adherence to CRCS (adjusted OR=0.80; 95% CI: 0.66-0.99; P=.037).
Conclusions: Neighborhood socioeconomic disadvantage is increasingly recognized as a determinant of health, and our study suggests that the contextual effect of area unemployment may extend to cancer screening outcomes. Our finding is important to cancer control planners because we identified a contextual marker of disparity that can be used to target local interventions to promote CRCS and thereby reduce cancer disparities among non-adherent individuals who reside in communities with high unemployment rates.
Keywords: Census tract; Colonoscopy; Colorectal cancer screening; Contextual effect; Fecal occult blood testing; Inequalities; Multilevel analysis; Sigmoidoscopy; Socioeconomic factors.
Copyright © 2015 Elsevier Ltd. All rights reserved.
Conflict of interest statementConflict of interest statement
The authors have no conflicts of interest to report.
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