Total sleep duration and daytime napping in relation to dementia detection risk: Results from the Million Women Study.
Alzheimers Dement
; 19(11): 4978-4986, 2023 Nov.
Article
em En
| MEDLINE
| ID: mdl-37083147
ABSTRACT
INTRODUCTION:
There is inconsistent evidence on the associations of sleep duration and daytime napping with dementia risk.METHODS:
In the Million Women Study, a total of 830,716 women (mean age, 60 years) were asked about sleep duration (<7, 7-8, >8 hours) and daytime napping (rarely/never, sometimes, usually) in median year 2001, and were followed for the first hospital record with any mention of dementia. Cox regression estimated dementia detection risk ratios (RRs) during 17-year follow-up in 5-year intervals.RESULTS:
With 34,576 dementia cases, there was strong attenuation over follow-up in the RRs related to long sleep duration (>8 vs 7-8 hours) and usually napping (vs rarely/never). Short sleep duration was modestly, positively associated with dementia in the long term (RR = 1.08, 95% confidence interval [CI] 1.04-1.12).DISCUSSION:
There was little evidence to suggest that long sleep duration and regular napping are associated with long-term dementia risk. Short sleep duration was modestly associated with dementia risk, but residual confounding cannot be excluded. HIGHLIGHTS Long sleep duration was not associated with long-term dementia risk. Daytime napping was not associated with long-term dementia risk. There is some evidence for a small higher risk of dementia related to short sleep.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Transtornos do Sono-Vigília
/
Demência
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article