Abstract
To a great extent, research on geographic accessibility to mammography facilities has focused on urban–rural differences. Spatial accessibility within urban areas can nonetheless pose a challenge, especially for minorities and low-income urban residents who are more likely to depend on public transportation. To examine spatial and temporal accessibility to mammography facilities in the Atlanta metropolitan area by public and private transportation, we built a multimodal transportation network model including bus and rail routes, bus and rail stops, transfers, walk times, and wait times. Our analysis of travel times from the population-weighted centroids of the 282 census tracts in the 2-county area to the nearest facility found that the median public transportation time was almost 51 minutes. We further examined public transportation travel times by levels of household access to a private vehicle. Residents in tracts with the lowest household access to a private vehicle had the shortest travel times, suggesting that facilities were favorably located for women who have to use public transportation. However, census tracts with majority non-Hispanic black populations had the longest travel times for all levels of vehicle availability. Time to the nearest mammography facility would not pose a barrier to women who had access to a private vehicle. This study adds to the literature demonstrating differences in spatial accessibility to health services by race/ethnicity and socioeconomic characteristics. Ameliorating spatial inaccessibility represents an opportunity for intervention that operates at the population level.
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Acknowledgments
We thank Erin Justin, Senior Program Officer at the CDC Foundation, for project management assistance and Efomo Woghiren at the Agency for Toxic Substances and Disease Registry for assistance in building the transportation network model. This study was supported by a grant from Susan G. Komen for Cure through the CDC Foundation.
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The findings and conclusions of this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.
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Peipins, L.A., Graham, S., Young, R. et al. Time and Distance Barriers to Mammography Facilities in the Atlanta Metropolitan Area. J Community Health 36, 675–683 (2011). https://doi.org/10.1007/s10900-011-9359-5
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DOI: https://doi.org/10.1007/s10900-011-9359-5