Evidence map›Paper›PMID 19875616›Full record

ArticleDiabetes2010

Maternal age at birth and childhood type 1 diabetes: a pooled analysis of 30 observational studies.

Chris R Cardwell, Lars C Stene, Geir Joner, Max K Bulsara, Ondrej Cinek, Joachim Rosenbauer, Johnny Ludvigsson, Mireia Jané, Jannet Svensson, Michael J Goldacre and 18 more

Open access · bronzeAbstract read
In one paragraph

Article in Diabetes, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 94 citations in OpenAlex.

  1. Overweight and obesity in youth with type 1 diabetes.Annual review of nursing research · 2013
    Pooled it
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  17. Type 1 diabetes-early life origins and changing epidemiology.The lancet. Diabetes & endocrinology · 2020
    Review
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  19. Article
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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

28 authors at 20 institutions in 15 countries.

Chris R CardwellCentre for Public Health, Queen's University Belfast, Belfast, UK. c.cardwell@qub.ac.uk
Lars C Stene
Geir Joner
Max K Bulsara
Ondrej Cinek
Joachim Rosenbauer
Johnny Ludvigsson
Mireia Jané
Jannet Svensson
Michael J Goldacre
Thomas Waldhoer
Przemyslawa Jarosz-Chobot
Suely G A Gimeno
Lee-Ming Chuang
Roger C Parslow
Emma J K Wadsworth
Amanda Chetwynd
Paolo Pozzilli
Girts Brigis
Brone Urbonaite
Sandra Sipetic
Edith Schober
Gabriele Devoti
Constantin Ionescu-Tirgoviste
Carine E de Beaufort
Denka Stoyanov
Karsten Buschard
Chris C Patterson
Medical University of Vienna · ATQueen's University Belfast · GBCardiff University · GBCentre Hospitalier de Luxembourg · LUCharles University · CZDeutsches Diabetes-Zentrum e.V. · DEGlostrup Hospital · DKLancaster University · GBLinköping University · SEMedical University of Silesia · PLNational Taiwan University Hospital · TWNorwegian Institute of Public Health · NORiga Stradiņš University · LVRigshospitalet · DKThe University of Notre Dame Australia · AUUniversidade Federal de São Paulo · BRUniversità Campus Bio-Medico · ITUniversity of Belgrade · RSUniversity of Leeds · GBUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe aim if the study was to investigate whether children born to older mothers have an increased risk of type 1 diabetes by performing a pooled analysis of previous studies using individual patient data to adjust for recognized confounders. RESEARCH DESIGN AND

methodsRelevant studies published before June 2009 were identified from MEDLINE, Web of Science, and EMBASE. Authors of studies were contacted and asked to provide individual patient data or conduct prespecified analyses. Risk estimates of type 1 diabetes by maternal age were calculated for each study, before and after adjustment for potential confounders. Meta-analysis techniques were used to derive combined odds ratios and to investigate heterogeneity among studies.

resultsData were available for 5 cohort and 25 case-control studies, including 14,724 cases of type 1 diabetes. Overall, there was, on average, a 5% (95% CI 2-9) increase in childhood type 1 diabetes odds per 5-year increase in maternal age (P = 0.006), but there was heterogeneity among studies (heterogeneity I(2) = 70%). In studies with a low risk of bias, there was a more marked increase in diabetes odds of 10% per 5-year increase in maternal age. Adjustments for potential confounders little altered these estimates.

conclusionsThere was evidence of a weak but significant linear increase in the risk of childhood type 1 diabetes across the range of maternal ages, but the magnitude of association varied between studies. A very small percentage of the increase in the incidence of childhood type 1 diabetes in recent years could be explained by increases in maternal age.

Indexed as

Maternal AgeAdolescentAdultAge of OnsetCase-Control StudiesChildChild, PreschoolCohort StudiesDiabetes Mellitus, Type 1FemaleHumansMeta-Analysis as TopicOdds RatioRegression AnalysisReproducibility of Results

Identifiers

PMID19875616
PMCPMC2809958
OpenAlexW2139114453

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.