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Measuring Potential Access to Primary Healthcare Services: The Influence of Alternative Spatial Representations of Population

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Spatial accessibility measures are an important policy tool for managing healthcare provision and reducing health inequality. The two-step floating catchment area technique, in common with many alternative methodologies, requires that demand-side population be estimated using spatial interpolation techniques. This article studies the implications of adopting differing spatial representations of population on healthcare accessibility modeling outcomes. Results indicate that a dasymetric model yields lower accessibility scores than a standard pro rata model. More important, the difference is spatially disproportionate, suggesting that the degree of disadvantage experienced in rural areas may be greater than has previously been recognized.

Keywords: dasymetric mapping; healthcare provision; population; spatial accessibility; spatial representation

Document Type: Research Article


Affiliations: University of Glamorgan

Publication date: 2006-08-01

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