Evidence map›Paper›PMID 30074542›Full record

ArticleEpidemiology (Cambridge, Mass.)2018

Parental Smoking and Risk of Childhood-onset Type 1 Diabetes.

Maria C Magnus, German Tapia, Sjurdur F Olsen, Charlotta Granstrom, Karl Mårild, Per M Ueland, Øivind Midttun, Jannet Svensson, Jesper Johannesen, Torild Skrivarhaug and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 pooled it
7.6field-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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it, 38 citations in OpenAlex.

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  18. 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

14 authors at 11 institutions in 3 countries.

Maria C MagnusFrom the Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway.
German TapiaDivision of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway.
Sjurdur F OlsenCentre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Charlotta GranstromCentre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Karl MårildDivision of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway.
Per M UelandDepartment of Clinical Science, University of Bergen, Bergen, Norway.
Øivind MidttunBevital AS, Bergen, Norway.
Jannet SvenssonDepartment of Pediatrics, Copenhagen University Hospital, Herlev, Denmark.
Jesper JohannesenDepartment of Pediatrics, Copenhagen University Hospital, Herlev, Denmark.
Torild SkrivarhaugDivision of Pediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway.
Geir JonerDivision of Pediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway.
Pål R NjølstadDepartment of Pediatrics and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway.
Ketil StørdalDivision of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway.
Lars C SteneDivision of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway.
Norwegian Institute of Public Health · NOStatens Serum Institut · DKBevital (Norway) · NOCopenhagen University Hospital · DKHaukeland University Hospital · NOHerlev Hospital · DKOslo University Hospital · NOØstfold Hospital Trust · NOUniversity of Bergen · NOUniversity of Bristol · GBUniversity of Oslo · NO

Funding

Gene-Environment Interactions in an Autism Birth CohortU01NS047537 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI LIPKIN, W. IAN · 2003 to 2013
$27.0M
PEDIATRIC ONCOLOGY RESEARCH TRAINING PROGRAMT32CA009351 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI Elizabeth R Lawlor, SOHEIL MESHINCHI · 1985 to 2026
$7.0M
Medical Research Council MC/UU/12013/5Medical Research Council MC_UU_12013/5Medical Research Council MR/M009351/1NIEHS NIH HHS N01 ES075558NINDS NIH HHS U01 NS047537
6 · The paper itself

Abstract

backgroundA few prospective studies suggest an association between maternal smoking during pregnancy and lower risk of type 1 diabetes. However, the role of unmeasured confounding and misclassification remains unclear.

methodsWe comprehensively evaluated whether maternal smoking in pregnancy predicts lower risk of childhood-onset type 1 diabetes in two Scandinavian pregnancy cohorts (185,076 children; 689 cases) and a Norwegian register-based cohort (434,627 children; 692 cases). We measured cord blood cotinine as an objective marker of nicotine exposure during late pregnancy in 154 cases and 476 controls. We also examined paternal smoking during pregnancy, in addition to environmental tobacco smoke exposure the first 6 months of life, to clarify the role of characteristics of smokers in general.

resultsIn the pregnancy cohorts, maternal smoking beyond gestational week 12 was inversely associated with type 1 diabetes, pooled adjusted hazard ratio (aHR) 0.66 (95% CI = 0.51, 0.85). Similarly, in the Norwegian register-based cohort, children of mothers who still smoked at the end of pregnancy had lower risk of type 1 diabetes, aHR 0.65 (95% CI = 0.47, 0.89). Cord blood cotinine ≥30 nmol/L was also associated with reduced risk of type 1 diabetes, adjusted odds ratio 0.42 (95% CI = 0.17, 1.0). We observed no associations of paternal smoking during pregnancy, or environmental tobacco smoke exposure, with childhood-onset type 1 diabetes.

conclusionMaternal sustained smoking during pregnancy is associated with lower risk of type 1 diabetes in children. This sheds new light on the potential intrauterine environmental origins of the disease.

Indexed as

AdolescentBirth WeightChildCotinineDenmarkDiabetes Mellitus, Type 1FathersFemaleHumansMaleMaternal AgeMothersNorwayParityPregnancyPrenatal Exposure Delayed EffectsCotinine

Identifiers

PMID30074542
PMCPMC6169737
OpenAlexW2887192497

What OpenQuestion holds

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LicenceCC BY
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.