A MULTIVARIATE EXTENSION OF THE SPATIAL EFFECTS AUTOREGRESSION MODEL AND ITS APPLICATION TO THE ANALYSIS OF REGIONAL HEALTHCARE EXPENDITURE

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  • 空間効果型自己回帰モデルの多変量化と地域医療費分析への適用
  • クウカン コウカガタ ジコ カイキ モデル ノ タヘンリョウカ ト チイキ イリョウヒ ブンセキ エ ノ テキヨウ

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Abstract

This paper presents a multivariate extension of simultaneously specified spatial autoregressive process. The objective of the model is to examine spatial interrelations among geographically distributed variables. We discuss procedures to obtain a maximum likelihood estimate and give test statistic of the model. In an application of the model, we analyze healthcare expenditure on hospitalization and outpatient care by municipalities in the Tohoku, Kanto, and Ko-Shin-Etsu regions of Japan in 1998. We show that there is a positive spatial autocorrelation among each category and that outpatient care expenditure has a positive spatial influence on hospitalization care expenditure, but not vice versa.

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