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Dietary diversity and cognitive function among elderly people: A population-based study
- Source :
- The journal of nutrition, health & aging. 21:1089-1094
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- To explore associations of dietary diversity with cognitive function among Chinese elderly.This cross-sectional study was conducted in 2011-2012, data were analyzed using multiple linear regression and logistic regression models.community-based setting in the 23 provinces in China.8,571 elderly participants, including 2984 younger elderly aged 65-79 and 5587 oldest old aged 80+ participated in this study.Intake frequencies of food groups was collected and dietary diversity (DD) was assessed based on the mean of DD score. Cognitive function was assessed using the Chinese version of Mini-Mental State Examination (MMSE), and cognitive impairment was defined using education-based cutoffs. Information about socio-demographics, lifestyles, resilience and health status was also collected.Poor dietary diversity was significantly associated with cognitive function, with β (95% CI) of -0.11(-0.14, -0.08) for -log (31-MMSE score) and odds ratio (95% CI) of 1.29 (1.14, 1.47) for cognitive impairment. Interaction effect of age with DD was observed on cognitive impairment (P interaction=0.018), but not on -log (31-MMSE score) (P interaction=0.08). Further separate analysis showed that poor DD was significantly associated with increased risk of cognitive impairment in the oldest old (p0.01), with odds ratio (95% CI) of 1.34 (1.17, 1.54), while not in the younger elderly (p0.05), with OR (95% CI) being 1.09 (0.80, 1.47) in the fully adjusted model. Similar results were obtained when DD was categorized into four groups.Poor dietary diversity was associated with worse global cognitive function among Chinese elderly, and particularly for the oldest old. This finding would be very meaningful for prevention of cognitive impairment.
- Subjects :
- Male
0301 basic medicine
Gerontology
medicine.medical_specialty
Multivariate analysis
Cross-sectional study
Medicine (miscellaneous)
Logistic regression
Article
Food group
03 medical and health sciences
Cognition
0302 clinical medicine
Linear regression
Humans
Medicine
030212 general & internal medicine
Aged
Aged, 80 and over
Geriatrics
030109 nutrition & dietetics
Nutrition and Dietetics
business.industry
Odds ratio
Diet
Cross-Sectional Studies
Multivariate Analysis
Linear Models
Female
Geriatrics and Gerontology
Cognition Disorders
business
Subjects
Details
- ISSN :
- 17604788 and 12797707
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- The journal of nutrition, health & aging
- Accession number :
- edsair.doi.dedup.....f923892f44a6b6960a530017c6007422