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Int. J. Environ. Res. Public Health 2015, 12(11), 14490-14504; doi:10.3390/ijerph121114490

An Enhanced Variable Two-Step Floating Catchment Area Method for Measuring Spatial Accessibility to Residential Care Facilities in Nanjing

1
Department of Geographic Information Science, Nanjing University, Nanjing 210093, China
2
Department of Resources Environment and Tourism Management, West Anhui University, Anhui Luan 237012, China
3
Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing 210093, China
4
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Academic Editors: Igor Burstyn and Gheorghe Luta
Received: 5 October 2015 / Revised: 8 November 2015 / Accepted: 10 November 2015 / Published: 13 November 2015
(This article belongs to the Special Issue Methodological Innovations and Reflections-1)
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Abstract

Civil administration departments require reliable measures of accessibility so that residential care facility shortage areas can be accurately identified. Building on previous research, this paper proposes an enhanced variable two-step floating catchment area (EV2SFCA) method that determines facility catchment sizes by dynamically summing the population around the facility until the facility-to-population ratio (FPR) is less than the FPR threshold (FPRT). To minimize the errors from the supply and demand catchments being mismatched, this paper proposes that the facility and population catchment areas must both contain the other location in calculating accessibility. A case study evaluating spatial accessibility to residential care facilities in Nanjing demonstrates that the proposed method is effective in accurately determining catchment sizes and identifying details in the variation of spatial accessibility. The proposed method can be easily applied to assess other public healthcare facilities, and can provide guidance to government departments on issues of spatial planning and identification of shortage and excess areas. View Full-Text
Keywords: two-step floating catchment area (2FCA) method; spatial accessibility; residential care facility; catchment size two-step floating catchment area (2FCA) method; spatial accessibility; residential care facility; catchment size
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MDPI and ACS Style

Ni, J.; Wang, J.; Rui, Y.; Qian, T.; Wang, J. An Enhanced Variable Two-Step Floating Catchment Area Method for Measuring Spatial Accessibility to Residential Care Facilities in Nanjing. Int. J. Environ. Res. Public Health 2015, 12, 14490-14504.

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