Evidence map›Paper›PMID 27241183›Full record

ArticleDiabetologia2016

Neonatal vitamin D status is not associated with later risk of type 1 diabetes: results from two large Danish population-based studies.

Ramune Jacobsen, Steffen U Thorsen, Arieh S Cohen, Marika Lundqvist, Peder Frederiksen, Christian B Pipper, Flemming Pociot, Lau C Thygesen, Alberto Ascherio, Jannet Svensson and 1 more

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In one paragraph

Article in Diabetologia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 4 pooled it
5.1field-weighted citation impact, top 5% 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

30 citing papers in PubMed, 4 syntheses or guidelines pooled it, 47 citations in OpenAlex.

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  19. Type 1 diabetes-early life origins and changing epidemiology.The lancet. Diabetes & endocrinology · 2020
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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

11 authors at 6 institutions in 3 countries.

Ramune JacobsenResearch Unit for Dietary Studies at The Parker Institute, Copenhagen University Hospital, Bispebjerg og Frederiksberg, Nordre Fasanvej 57, Hovedvejen, Entrance 5, Ground Floor, 2000, Frederiksberg, Denmark. ramune.jacobsen@regionh.dk.
Steffen U ThorsenCopenhagen Diabetes Research Center (CPH-DIRECT), Department of Paediatrics, Herlev Hospital, University of Copenhagen, Herlev, Denmark.
Arieh S CohenDepartment of Congenital Disorders, Statens Serum Institute, Copenhagen, Denmark.
Marika LundqvistDepartment of Congenital Disorders, Statens Serum Institute, Copenhagen, Denmark.
Peder FrederiksenResearch Unit for Dietary Studies at The Parker Institute, Copenhagen University Hospital, Bispebjerg og Frederiksberg, Nordre Fasanvej 57, Hovedvejen, Entrance 5, Ground Floor, 2000, Frederiksberg, Denmark.
Christian B PipperDepartment of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark.
Flemming PociotCopenhagen Diabetes Research Center (CPH-DIRECT), Department of Paediatrics, Herlev Hospital, University of Copenhagen, Herlev, Denmark.
Lau C ThygesenNational Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark.
Alberto AscherioDepartment of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA.
Jannet SvenssonCopenhagen Diabetes Research Center (CPH-DIRECT), Department of Paediatrics, Herlev Hospital, University of Copenhagen, Herlev, Denmark.
Berit L HeitmannResearch Unit for Dietary Studies at The Parker Institute, Copenhagen University Hospital, Bispebjerg og Frederiksberg, Nordre Fasanvej 57, Hovedvejen, Entrance 5, Ground Floor, 2000, Frederiksberg, Denmark.
University of Copenhagen · DKStatens Serum Institut · DKUniversity of Southern Denmark · DKCopenhagen University Hospital · DKFrederiksberg Hospital · DKHarvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aims/hypothesisThe aim of this work was to assess whether neonatal levels of 25-hydroxyvitamin D (25(OH)D) are associated with risk of developing type 1 diabetes before the age of 18 years.

methodsTwo large-scale studies with different designs-a case-cohort and a case-control-were conducted using Danish national register data and biobank material. Weighted Cox regression and conditional logistic regression were used to calculate HRs and ORs, respectively. The concentration of 25(OH)D was assessed from neonatal dried blood spots using highly sensitive liquid chromatography-tandem mass spectrometry. Quintiles of 25(OH)D3 were used in the main analyses.

resultsThe case-cohort study included 912 type 1 diabetes cases and 2866 individuals without type 1 diabetes born in Denmark between 1981 and 2002 and followed up until the end of 2012. The case-control study included 527 matched case-control pairs born between 1981 and 1999 and followed up until May 2004. Both studies found no association between 25(OH)D3 levels and later risk of developing type 1 diabetes. The neonatal total 25(OH)D levels in the studies were low: 46% (case-cohort study) and 51% (case-control study) of individuals had 25(OH)D levels <25 nmol/l. CONCLUSIONS/

interpretationOur two large-scale national studies showed that 25(OH)D3 levels around the time of birth were not associated with later type 1 diabetes risk. Whether higher levels of 25(OH)D3 during pregnancy, acquired by higher doses of supplementation than are recommended today in most countries, could protect the offspring against type 1 diabetes cannot be ruled out by the present studies.

Indexed as

Case-Control StudiesChromatography, LiquidDenmarkDiabetes Mellitus, Type 1FemaleHumansInfant, NewbornMaleProportional Hazards ModelsRegistriesTandem Mass SpectrometryVitamin DVitamin DDenmarkGestationRegistersType 1 diabetesVitamin D

Identifiers

PMID27241183
OpenAlexW2405534258

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.