Evidence map›Paper›PMID 27412894›Full record

ArticleThe journals of gerontology. Series A, Biological sciences and medical sciences2016

Vitamin D Levels and the Risk of Cognitive Decline in Chinese Elderly People: the Chinese Longitudinal Healthy Longevity Survey.

David B Matchar, Choy-Lye Chei, Zhao-Xue Yin, Victoria Koh, Bibhas Chakraborty, Xiao-Ming Shi, Yi Zeng

Open access · bronzeAbstract read
In one paragraph

Article in The journals of gerontology. Series A, Biological sciences and medical sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
5.7field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 62 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 4 countries.

David B MatcharHealth Services and Systems Research, Duke-NUS Medical School, Singapore. Department of Medicine, Duke University School of Medicine, Durham, North Carolina. david.matchar@duke-nus.edu.sg.
Choy-Lye CheiHealth Services and Systems Research, Duke-NUS Medical School, Singapore. Department of Public Health Medicines, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
Zhao-Xue YinDivision of Non-Communicable Disease Control and Community Health, Chinese Center for Disease Control and Prevention, Beijing, China.
Victoria KohHealth Services and Systems Research, Duke-NUS Medical School, Singapore.
Bibhas ChakrabortyCentre for Quantitative Medicine, Duke-NUS Medical School, Singapore.
Xiao-Ming ShiDivision of Non-Communicable Disease Control and Community Health, Chinese Center for Disease Control and Prevention, Beijing, China.
Yi ZengCenter for the Study of Aging and Human Development and the Geriatric Division of School of Medicine, Duke University, Durham, North Carolina. Center for Healthy Aging and Development Studies, National School of Development, Raissun Institute for Advanced Studies, Peking University, Beijing, China.
Duke-NUS Medical School · SGChinese Center For Disease Control and Prevention · CNPeking University · CN

Funding

Demographic Analysis on Determinants of Healthy Longevity in ChinaR01AG023627 · NIA · DUKE UNIVERSITY · PI ZENG, YI · 2004 to 2014
$3.9M
NIA NIH HHS R01 AG023627
6 · The paper itself

Abstract

backgroundVitamin D has a neuroprotective function, potentially important for the prevention of cognitive decline. Prospective studies from Western countries support an association between lower vitamin D level and future cognitive decline in elderly people. No prospective study has examined this association in Asia.

methodsThis community-based cohort study of elderly people in China follows 1,202 cognitively intact adults aged ≥60 years for a mean duration of 2 years. Plasma vitamin D level was measured at the baseline. Cognitive state of participants was assessed using the Mini-Mental State Examination (MMSE). Cognitive impairment was defined as an MMSE score <18. Cognitive decline was defined as ≥3 points decline from baseline. Multivariable logistic regression models were used to examine the association between quartiles of vitamin D levels with cognitive decline and incidence of cognitive impairment.

resultsParticipants with low vitamin D level had an increased risk of cognitive decline. Compared with the highest quartile of vitamin D levels, the multivariable odds ratios (ORs; 95% confidence interval) for cognitive decline were 2.1 (1.3-3.4) for the second highest quartile, 2.2 (1.4-3.6) for the third highest quartile, and 2.0 (1.2-3.3) for the lowest quartile. The multivariable ORs of incident cognitive impairment for the second highest, third highest, and lowest versus highest quartiles of vitamin D levels were 1.9 (0.9-4.1), 2.6 (1.2-5.6), and 3.2 (1.5-6.6), respectively.

conclusionsThis first follow-up study of elderly people, including the oldest-old, in Asia shows that low vitamin D levels were associated with increased risk of subsequent cognitive decline and impairment.

Indexed as

AgedAged, 80 and overAgingChinaCognition DisordersFemaleGeriatric AssessmentHumansLongevityLongitudinal StudiesMaleMiddle AgedNeuropsychological TestsRisk FactorsVitamin DVitamin D DeficiencyVitamin DChinese elderly peopleCognitive declineCognitive impairmentFollow-up studyVitamin D

Identifiers

PMID27412894
PMCPMC5018565
OpenAlexW2473194357

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.