What question did this study set out to answer?

To estimate the prevalence, subtype distribution, and clinical severity of dementia among an elderly population.

January 1, 1995International Journal of Epidemiology

Prevalence of Senile Dementia in Okinawa, Japan

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Authors

COChikara OguraHokuriku Electric Power Company (Japan)HNHaruo NakamotoUniversity of the Ryukyus TUTakeshi UemaTezukayama University

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Implication

Population-based survey finds an overall dementia prevalence of 6.7% in older adults, highlighting sharp increases in advanced age and a higher frequency of Alzheimer-type dementia.

Key Points

To estimate the prevalence, subtype distribution, and clinical severity of dementia among an elderly population.
Randomly sampled 3,524 subjects aged ≥ 65 years from urban (61.1%) and rural (38.9%) populations in Okinawa Prefecture, Japan.
Conducted a Phase 1 screening of 3,312 subjects (94.3% interview rate) using the Mini-Mental State (MMS) scale, identifying 522 individuals (15.8%) for Phase 2 assessment.
Evaluated screened individuals in Phase 2 using DSM-III-R diagnostic criteria administered by psychiatrists to identify dementia cases.
The estimated overall prevalence of dementia was 6.7%, reaching 41.4% in women and 21.2% in men aged 90–99 years.
Alzheimer-type dementia was more frequent than multi-infarct dementia with a 1.5:1 overall ratio (1.2:1 in men, 1.7:1 in women).
Dementia severity was distributed as mild in 16.9%, moderate in 30.8%, and severe in 52.3% of 172 diagnosed cases, with severe cases increasing with age.

Cite This Study

Ogura et al. (1995) studied this question.

synapsesocial.com/papers/6a6b9da801245da06ecb8922 https://doi.org/10.1093/ije/24.2.373

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Implication

Population-based survey finds an overall dementia prevalence of 6.7% in older adults, highlighting sharp increases in advanced age and a higher frequency of Alzheimer-type dementia.

Prevalence of Senile Dementia in Okinawa, Japan

Discussion

Member takes

Implication

Key Points

Cite This Study

Prevalence of Senile Dementia in Okinawa, Japan

Discussion

Member takes

Implication

Key Points

Cite This Study

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