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July 4, 2026BMJ Public HealthOpen Access

Association of municipal rurality and area deprivation with cause-specific mortality in Japan: a nationwide ecological study

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Authors

MKMasahide KodaNHNahoko HaradaSNShuhei Nomura

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Overview

Ecological study analyzing mortality in Japan's municipalities, indicating diverse geographic and socioeconomic influences.

Key Points

  • To investigate how rurality and area deprivation relate to cause-specific mortality in Japan.
  • Analyzed 4,078,801 deaths from 1890 municipalities in Japan (2017-2019).
  • Used Rurality Index for Japan and Area Deprivation Index (ADI) to measure rurality and socioeconomic deprivation.
  • Employed Bayesian spatial Poisson models to estimate rate ratios for all-cause and cause-specific mortality outcomes.
  • Adjusted RR for all-cause mortality in females was 1.009 (95% CrI 1.002 to 1.016) indicating rural excess.
  • Rural excess was observed for cardiovascular outcomes with RRs ranging from 1.023 to 1.052.
  • Urban excess was noted for tuberculosis with RR of 0.858 (95% CrI 0.814 to 0.905).

Cite This Study

Koda et al. (2026) studied this question.

synapsesocial.com/papers/6a48a4c689561a0c2d78dd94https://doi.org/10.1136/bmjph-2026-004913
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