Yokohama City University

Testing and evaluating updated variants of the rurality index for Japan: A nationwide methodological study

2026.06.05

Abstract
Objectives To update the rurality index for Japan (RIJ) using the most recent national data and to test and evaluate the updated RIJ variants that incorporate alternative distance metrics and a modified classification of remote islands, thereby providing methodological guidance for their use in research and health policy.

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Makoto Kaneko
Visiting Professor
Department of Health Data Science, Yokohama City University, Yokohama, Japan