Evidence map›Paper›PMID 30770424›Full record

ArticleNeurology2019

Vitamin D levels and risk of delirium: A mendelian randomization study in the UK Biobank.

Kirsty Bowman, Lindsay Jones, Luke C Pilling, João Delgado, George A Kuchel, Luigi Ferrucci, Richard H Fortinsky, David Melzer

Open access · hybridAbstract read
In one paragraph

Article in Neurology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 5 pooled it
3.1field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 5 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Pooled it
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  5. The complex interaction of genetics and delirium: a systematic review and meta-analysis.European archives of psychiatry and clinical neuroscience · 2021
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  6. Article
  7. A simulation study comparing anticholinergic drug use with polypharmacy for risk of death, dementia, and delirium in UK Biobank.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Kirsty BowmanFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.
Lindsay JonesFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.
Luke C PillingFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.ORCID 0000-0002-3332-8454
João DelgadoFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.ORCID 0000-0003-1648-871X
George A KuchelFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.
Luigi FerrucciFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.
Richard H FortinskyFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD.
David MelzerFrom the Epidemiology and Public Health Group (K.B., L.J., L.C.P., J.D., D.M.), University of Exeter Medical School, Royal Devon & Exeter Hospital, Exeter, UK; UConn Center on Aging (G.A.K., R.H.F., D.M.), University of Connecticut, Farmington, CT; and National Institute on Aging (L.F.), Baltimore, MD. D.Melzer@exeter.ac.uk.
University of Connecticut · US

Funding

Department of Health PB-PG-1215-20022Medical Research Council MC_PC_17228Medical Research Council MC_QA137853Medical Research Council MR/M023095/1
6 · The paper itself

Abstract

objectiveTo estimate effects of vitamin D levels on incident delirium hospital admissions using inherited genetic variants in mendelian randomization models, which minimize confounding and exclude reverse causation.

methodsLongitudinal analysis using the UK Biobank, community-based, volunteer cohort (2006-2010) with incident hospital-diagnosed delirium (ICD-10 F05) ascertained during ≤9.9 years of follow-up of hospitalization records (to early 2016). We included volunteers of European descent aged 60-plus years by end of follow-up. We used single-nucleotide polymorphisms previously shown to increase circulating vitamin D levels, and

resultsOf 313,121 participants included, 544 were hospitalized with delirium during follow-up. Vitamin D variants were protective for incident delirium: hazard ratio = 0.74 per 10 nmol/L (95% confidence interval 0.62-0.87, CONCLUSIONS AND RELEVANCE: In a large community-based cohort, there is genetic evidence supporting a causal role for vitamin D levels in incident delirium. Trials of correction of low vitamin D levels in the prevention of delirium are needed.

Indexed as

AdultAgedApolipoproteins EBiological Specimen BanksDeliriumFemaleFollow-Up StudiesHumansLongitudinal StudiesMaleMendelian Randomization AnalysisMiddle AgedPolymorphism, Single NucleotideProspective StudiesUnited KingdomVitamin DApolipoproteins EVitamin D

Identifiers

PMID30770424
PMCPMC6511096
OpenAlexW2913466794

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.