Evidence map›Paper›PMID 22791738›Full record

ArticleAmerican journal of epidemiology2012

Maternal and paternal smoking during pregnancy and risk of ADHD symptoms in offspring: testing for intrauterine effects.

Kate Langley, Jon Heron, George Davey Smith, Anita Thapar

Abstract read
In one paragraph

Article in American journal of epidemiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 7 pooled it
–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

75 citing papers in PubMed, 7 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Research Review: Developmental origins of depression - a systematic review and meta-analysis.Journal of child psychology and psychiatry, and allied disciplines · 2021
    Pooled it
  6. Pooled it
  7. Maternal Smoking and Autism Spectrum Disorder: A Meta-analysis.Journal of autism and developmental disorders · 2015
    Pooled it
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15 more citing papers are in PubMed but not listed here.

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

4 authors.

Kate LangleyMRC Centre for Neuropsychiatric Genetics and Genomics, Department of Psychological Medicine and Neurology, School of Medicine, Cardiff University, United Kingdom. langleyk@cardiff.ac.uk
Jon Heron
George Davey Smith
Anita Thapar

Funding

Medical Research Council 74882Medical Research Council G0600705Medical Research Council G9810900Medical Research Council G9815508Wellcome Trust 076467Wellcome Trust 092731
6 · The paper itself

Abstract

Maternal smoking during pregnancy is associated with attention deficit hyperactivity disorder (ADHD) in offspring. It is assumed by many that this association is causal. Others suggest that observed associations are due to unmeasured genetic factors or other confounding factors. The authors compared risks of maternal smoking during pregnancy with those of paternal smoking during pregnancy. With a causal intrauterine effect, no independent association should be observed between paternal smoking and offspring ADHD. If the association is due to confounding factors, risks of offspring ADHD should be of similar magnitudes regardless of which parent smokes. This hypothesis was tested in 8,324 children from a well-characterized United Kingdom prospective cohort study, the Avon Longitudinal Study of Parents and Children (data from 1991-2000). Associations between offspring ADHD and maternal and paternal smoking during pregnancy were compared using regression analyses. Offspring ADHD symptoms were associated with exposure to both maternal and paternal smoking during pregnancy (mothers: β = 0.25, 95% confidence interval: 0.18, 0.32; fathers: β = 0.21, 95% confidence interval: 0.15, 0.27). When paternal smoking was examined in the absence of maternal smoking, associations remained and did not appear to be due to passive smoking exposure in utero. These findings suggest that associations between maternal smoking during pregnancy and child ADHD may be due to genetic or household-level confounding rather than to causal intrauterine effects.

Indexed as

Attention Deficit Disorder with HyperactivityBirth WeightChildFathersFemaleHumansLinear ModelsMaleMaternal ExposureMothersPregnancyPrenatal Exposure Delayed EffectsProspective StudiesRisk FactorsSex FactorsSmokingTobacco Smoke Pollution

Identifiers

PMID22791738
PMCPMC3406617

What OpenQuestion holds

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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.