Evidence map›Paper›PMID 25117780›Full record

ArticleEuropean journal of neurology2015

Serum 25-hydroxyvitamin D and cognitive decline in the very old: the Newcastle 85+ Study.

A Granic, T R Hill, T B L Kirkwood, K Davies, J Collerton, C Martin-Ruiz, T von Zglinicki, B K Saxby, K A Wesnes, D Collerton and 2 more

Abstract read
In one paragraph

Article in European journal of neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
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

26 citing papers in PubMed.

  1. Article
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  8. Vitamin D status, cognitive decline and incident dementia: the Canadian Study of Health and Aging.Canadian journal of public health = Revue canadienne de sante publique · 2020
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  10. Review
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  16. Observational
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  18. Vitamin D Levels and the Risk of Cognitive Decline in Chinese Elderly People: the Chinese Longitudinal Healthy Longevity Survey.The journals of gerontology. Series A, Biological sciences and medical sciences · 2016
    Article
  19. Article
  20. Serum 25-hydroxyvitamin D concentration and its determinants in the very old: the Newcastle 85+ Study.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

A GranicInstitute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK.
T R Hill
T B L Kirkwood
K Davies
J Collerton
C Martin-Ruiz
T von Zglinicki
B K Saxby
K A Wesnes
D Collerton
J C Mathers
C Jagger

Funding

Biotechnology and Biological Sciences Research CouncilBritish Heart FoundationDepartment of HealthMedical Research Council G0500997Medical Research Council G0601333Medical Research Council MR/J50001X/1Medical Research Council MR/K006312/1The Dunhill Medical Trust R124/0509
6 · The paper itself

Abstract

background and purposeStudies investigating the association between 25-hydroxyvitamin D [25(OH)D] and cognition in the very old (85+) are lacking.

methodsCross-sectional (baseline) and prospective data (up to 3 years follow-up) from 775 participants in the Newcastle 85+ Study were analysed for global (measured by the Standardized Mini-Mental State Examination) and attention-specific (measured by the attention battery of the Cognitive Drug Research test) cognitive performance in relation to season-specific 25(OH)D quartiles.

resultsThose in the lowest and highest season-specific 25(OH)D quartiles had an increased risk of impaired prevalent (1.66, 95% confidence interval 1.06-2.60, P = 0.03; 1.62, 95% confidence interval 1.02-2.59, P = 0.04, respectively) but not incident global cognitive functioning or decline in functioning compared with those in the middle quartiles adjusted for sociodemographic, health and lifestyle confounders. Random effects models showed that participants belonging to the lowest and highest 25(OH)D quartiles, compared with those in the middle quartiles, had overall slower (log-transformed) attention reaction times for Choice Reaction Time (lowest, β = 0.023, P = 0.01; highest, β = 0.021, P = 0.02), Digit Vigilance Task (lowest, β = 0.009, P = 0.05; highest, β = 0.01, P = 0.02) and Power of Attention (lowest, β = 0.017, P = 0.02; highest, β = 0.022, P = 0.002) and greater Reaction Time Variability (lowest, β = 0.021, P = 0.02; highest, β = 0.02, P = 0.03). The increased risk of worse global cognition and attention amongst those in the highest quartile was not observed in non-users of vitamin D supplements/medication.

conclusionLow and high season-specific 25(OH)D quartiles were associated with prevalent cognitive impairment and poorer overall performance in attention-specific tasks over 3 years in the very old, but not with global cognitive decline or incident impairment.

Indexed as

SeasonsAged, 80 and overAttentionCognition DisordersCross-Sectional StudiesFemaleFollow-Up StudiesHumansMalePrevalenceUnited KingdomVitamin DVitamin D Deficiency25-hydroxyvitamin DVitamin D25-hydroxyvitamin Dattentioncognitive declinecohort study

Identifiers

PMID25117780
PMCPMC4310141

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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.