Prevalence of dementia and dementing diseases in the old-old population in Japan: the Kurihara Project. Implications for Long-Term Care Insurance data.
Psychogeriatrics
; 12(4): 226-34, 2012 Dec.
Article
en En
| MEDLINE
| ID: mdl-23279144
ABSTRACT
BACKGROUND:
There have been no reports on the prevalence of dementia among the old-old people in Japan.METHODS:
We studied the old-old population in Kurihara, northern Japan. Analysis 1 of Participants 1 (n=590) was performed to evaluate the prevalence of dementia and dementing diseases by intensive evaluation including MRI. Analysis 2 aimed to determine a good indicator for detecting 'suspected dementia condition' based on the Long-Term Care Insurance index. Analysis 3 of Participants 2 (n=3915) aimed to estimate the prevalence of 'suspected dementia condition'.RESULTS:
In Analysis 1, 73 people (12.4%) were diagnosed with dementia. The most common cause was Alzheimer's disease with cerebrovascular disease. In Analysis 2, level I of the Impairment Level of Dementia was found to be a good indicator of 'suspected dementia condition'. In Analysis 3, the overall estimated prevalence of 'suspected dementia condition' was 23.6%. In men, the ratio increased gradually from 75 to 87 years old to about 20%, increased to 40% at the age of 88 and became stable thereafter. In contrast, in women, the ratio increased from 75 to 95+ years old, reaching about 70%.CONCLUSIONS:
The prevalence was higher than that reported previously. There was a difference between the sexes an 'age-related' increase occurred in men and an 'ageing-related' increase in women. Alzheimer's disease with cerebrovascular disease was the most common cause, which coincided with the previous findings of individuals aged 65 years and older; however, the ratio of mixed dementia was greater.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Envejecimiento
/
Seguro de Cuidados a Largo Plazo
/
Demencia
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Prevalence_studies
/
Risk_factors_studies
Límite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
País/Región como asunto:
Asia
Idioma:
En
Revista:
Psychogeriatrics
Asunto de la revista:
GERIATRIA
/
PSICOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Japón