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Breast cancer treatment resources and guideline-concordant treatment in Appalachia



Breast cancer treatment resources and guideline-concordant treatment in Appalachia



Journal of Clinical Oncology 29(27_suppl): 216-216



NlmCategory="UNASSIGNED">216 Background: Appalachia has poorer cancer outcomes, but little research has been done regarding availability of cancer care resources in this region and how resource availability may relate to cancer outcomes. This study 1) examines associations between radiation therapy resources and receipt of radiotherapy after BCS in counties within Kentucky - a SEER state; and 2) describes spatial patterning of breast cancer treatment resources in all 13 Appalachian states. For the Kentucky analyses, county-level data from the Area Resource File and SEER registry are analyzed. Bivariate analyses and spatial lag regression using a 6-nearest neighboring counties matrix are conducted. The sample includes stage I or II primary breast cancer patients age 18+ years diagnosed in Kentucky during 2000-2007. The dependent variable is the county-level percentage of patients received BCS without radiation; independent variables include density of radiation therapy providers and facilities and other socioeconomic covariates. For the analyses of entire Appalachian region, descriptive analyses and exploratory spatial data analysis are conducted including 420 Appalachian counties and 644 non-Appalachian counties in 13 states. In Kentucky 16.44% of 17,227 early stage breast cancer patients received BCS without radiation therapy (21.08% in Appalachia versus 14.80% in non-Appalachia, p<0.001). Appalachian Kentucky had significantly fewer radiation oncologists and radiation therapy facilities per capita than non-Appalachian Kentucky. The number of radiation therapy facilities per capita is negatively associated with rates of BCS without radiation when controlling for covariates. Analysis of 13 Appalachian states shows that Appalachian counties, especially in the Central and Southern regions, had significant fewer physicians per capita in Surgery, Anesthesia, Clinical Pathology, and Radiation Oncology. Clustering of scarce breast cancer care resources was observed in Central Appalachia. Appalachian counties, especially in central Appalachia, have fewer breast cancer treatment resources than non-Appalachian counties, and resource availability is associated with cancer health disparities.

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Accession: 057325103

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PMID: 27957916



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