Socio-economic status and dementia onset among older Japanese: A 6-year prospective cohort study from the Japan Gerontological Evaluation Study.
cognitive decline
dementia
education
employment
income
life course
longitudinal studies
social epidemiology
socio-economic status
Journal
International journal of geriatric psychiatry
ISSN: 1099-1166
Titre abrégé: Int J Geriatr Psychiatry
Pays: England
ID NLM: 8710629
Informations de publication
Date de publication:
11 2019
11 2019
Historique:
received:
03
04
2019
accepted:
17
07
2019
pubmed:
23
7
2019
medline:
9
4
2020
entrez:
23
7
2019
Statut:
ppublish
Résumé
Lower socio-economic status (SES) may be associated with dementia later in life, but there is inconsistent evidence supporting this claim. We aim to examine the association between three SESs (education, job, and income indicators) and dementia onset in older adults. Study design was a 6-year prospective cohort study. Participants included a total of 52 063 community-dwelling adults aged 65 years or older without long-term care needs from the Japan Gerontological Evaluation Study. Outcome variable was dementia onset. Explanatory variables were educational years, the longest job held, and equivalised household income. We performed Cox proportional hazard analysis by gender with multiple imputation. During the follow-up period, 10.5% of participants acquired dementia. The adjusted risks of dementia incidence of the participants with less than 6 years of education were 1.34 times (95% confidence interval [CI], 1.04-1.73) in men and 1.21 (1.00-1.45) times in women higher than those with more than 13 years of education. Females with less than 1.99 million yen (hazard ratio = 0.83, 0.72-0.96) of equivalised income were less likely to acquire dementia than those with four million yen or higher. Educational attainment had a robust impact on dementia onset compared with the other SES factors in both genders of older Japanese people. Securing an education for children could be crucial to prevent dementia later in life. The longest job held was less likely to be risks of dementia incidence, compared with the other two factors.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1642-1650Informations de copyright
© 2019 John Wiley & Sons, Ltd.
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