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Multilevel Regression for Small-Area Estimation of Mammography Use in the United States, 2014.


ABSTRACT: BACKGROUND:The U.S. Preventive Services Task Force recommends biennial screening mammography for average-risk women aged 50-74 years. County-level information on population measures of mammography use can inform targeted intervention to reduce geographic disparities in mammography use. County-level estimates for mammography use nationwide are rarely presented. METHODS:We used data from the 2014 Behavioral Risk Factor Surveillance System (BRFSS; n = 130,289 women), linked it to the American Community Survey poverty data, and fitted multilevel logistic regression models with two outcomes: mammography within the past 2 years (up-to-date), and most recent mammography 5 or more years ago or never (rarely/never). We poststratified the data with U.S. Census population counts to run Monte Carlo simulations. We generated county-level estimates nationally and by urban-rural county classifications. County-level prevalence estimates were aggregated into state and national estimates. We validated internal consistency between our model-based state-specific estimates and urban-rural estimates with BRFSS direct estimates using Spearman correlation coefficients and mean absolute differences. RESULTS:Correlation coefficients were 0.94 or larger. Mean absolute differences for the two outcomes ranged from 0.79 to 1.03. Although 78.45% (95% confidence interval, 77.95%-78.92%) of women nationally were up-to-date with mammography, more than half of the states had counties with >15% of women rarely/never using a mammogram, many in rural areas. CONCLUSIONS:We provided estimates for all U.S. counties and identified marked variations in mammography use. Many states and counties were far from the 2020 target (81.1%). IMPACT:Our results suggest a need for planning and resource allocation on a local level to increase mammography uptake.

SUBMITTER: Berkowitz Z 

PROVIDER: S-EPMC6343124 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Multilevel Regression for Small-Area Estimation of Mammography Use in the United States, 2014.

Berkowitz Zahava Z   Zhang Xingyou X   Richards Thomas B TB   Sabatino Susan A SA   Peipins Lucy A LA   Holt James J   White Mary C MC  

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 20181001 1


<h4>Background</h4>The U.S. Preventive Services Task Force recommends biennial screening mammography for average-risk women aged 50-74 years. County-level information on population measures of mammography use can inform targeted intervention to reduce geographic disparities in mammography use. County-level estimates for mammography use nationwide are rarely presented.<h4>Methods</h4>We used data from the 2014 Behavioral Risk Factor Surveillance System (BRFSS; <i>n</i> = 130,289 women), linked it  ...[more]

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