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Medical care system evaluation based on DEA of prefectures in Japan

In order to reveal disparity and its cause in medical care among Japanese prefectures, this paper describes how DEA works as follows: (1) DEA/BCC model estimates the disparity between prefectures, (2) “RM-DEA using Cone-Ratio approach” estimates the cause of the disparity, and (3) Improved MF-DEA (Multi-Frontier based DEA) model estimates the disparity between eastern and western Japan. This paper also illustrates three numerical experiments.