Prevalence of Dementia in the rural village of Hanazono-mura, Japan

Mitsuru Shiba, Jun Shimogaito, Asami Kose, Shinichi Fujiuchi, Hitoshi Nishiyama, Fumio Yoshimasu, Tadashi Asai, Walter A. Rocca

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We studied the prevalence of dementing disorders in a rural municipality of Japan (Hanazono-mura), using a door-to-door two-phase design. In phase 1, the Hasegawa's Dementia Scale-Revised was applied as a screening test to all subjects aged 65 years and older (n=201). Among subjects screened positive, 17 were diagnosed with dementia in phase 2. The prevalence (cases/100 aged 65 years and older) was 8.5 for all types of dementia, 3.5 for Alzheimer's disease, 3.0 for vascular dementia, and 2.0 for other dementia (including mixed dementia). The prevalence of dementia was slightly but consistently higher in men than women at all ages. The overall prevalence was higher in women for Alzheimer's disease and in men for vascular dementia.

Original languageEnglish (US)
Pages (from-to)32-36
Number of pages5
Issue number1
StatePublished - 1999


  • Alzheimer's disease
  • Dementia
  • Japan
  • Prevalence
  • Vascular dementia

ASJC Scopus subject areas

  • Epidemiology
  • Clinical Neurology


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