The Korean Journal of Health Service Management (보건의료산업학회지)

Korea Society of Health Service Management (보건의료산업학회)
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Analysis on the Regional Variation of the Rate of Inpatient Medical Costs in Local-Out: Geographically Weighted Regression Approach

지리적가중회귀분석을 이용한 관외입원진료비 비율의 지역 간 차이 분석

  • Jo, Eun-Kyung (Department of Health Administration, Yonsei University Graduate School) ;
  • Lee, Kwang-Soo (Department of Health Administration, Yonsei University)
  • 조은경 (연세대학교 일반대학원 보건행정학과) ;
  • 이광수 (연세대학교 보건행정학과)
  • Received : 2014.03.20
  • Accepted : 2014.04.10
  • Published : 2014.06.30
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Abstract

This study purposed to analyze the regional variation of the local-out rates of inpatient services. Multiple data sources collected from National Health Insurance Corporation and statistics Korea were merged to produce the analysis data set. The unit of analysis in this study was city, Gun, Gu, and all of them were included in analysis. The dependent variable measured the local-out rate of inpatient cost in study regions. Local environments were measured by variables in three dimensions: provider factors, socio-demographic factors, and health status. Along with the traditional ordinary least square (OLS) based regression model, geographically weighted regression (GWR) model were applied to test their effects. SPSS v21 and ArcMap v10.2 were applied for the statistical analysis. Results from OLS regression showed that most variables had significant relationships with the local-out rate of inpatient services. However, some variables had shown diverse directions in regression coefficients depending on regions in GWR. This implied that the study variables might not have consistent effects and they may varied depending the locations.

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