An enhanced two-step floating catchment area (E2SFCA) method for measuring spatial accessibility to primary care physicians

Wei Luo, Yi Qi

Research output: Contribution to journalArticlepeer-review

481 Scopus citations

Abstract

This paper presents an enhancement of the two-step floating catchment area (2SFCA) method for measuring spatial accessibility, addressing the problem of uniform access within the catchment by applying weights to different travel time zones to account for distance decay. The enhancement is proved to be another special case of the gravity model. When applying this enhanced 2SFCA (E2SFCA) to measure the spatial access to primary care physicians in a study area in northern Illinois, we find that it reveals spatial accessibility pattern that is more consistent with intuition and delineates more spatially explicit health professional shortage areas. It is easy to implement in GIS and straightforward to interpret.

Original languageEnglish (US)
Pages (from-to)1100-1107
Number of pages8
JournalHealth and Place
Volume15
Issue number4
DOIs
StatePublished - Dec 2009
Externally publishedYes

Keywords

  • GIS
  • Gravity model
  • Primary care physician shortage
  • Spatial accessibility
  • Two-step floating catchment area

ASJC Scopus subject areas

  • Health(social science)
  • Sociology and Political Science
  • Life-span and Life-course Studies

Fingerprint

Dive into the research topics of 'An enhanced two-step floating catchment area (E2SFCA) method for measuring spatial accessibility to primary care physicians'. Together they form a unique fingerprint.

Cite this