Evidence map›Paper›PMID 33105572›Full record

ArticleInternational journal of environmental research and public health2020

Maternal Ferritin Levels during Pregnancy and ADHD Symptoms in 4-Year-Old Children: Results from the INMA-INfancia y Medio Ambiente (Environment and Childhood) Prospective Birth Cohort Study.

Loreto Santa-Marina, Nerea Lertxundi, Ainara Andiarena, Amaia Irizar, Jordi Sunyer, Amaia Molinuevo, Sabrina Llop, Jordi Julvez, Andrea Beneito, Jesús Ibarluzea and 2 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 8 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 3 pooled it
1.4field-weighted citation impact, top 19% 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

8 citing papers in PubMed, 3 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
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  5. Article
  6. Review
  7. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 5 institutions in 2 countries.

Loreto Santa-MarinaSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.
Nerea LertxundiBiodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain.
Ainara AndiarenaBiodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain.
Amaia IrizarSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.
Jordi SunyerSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.
Amaia MolinuevoSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.ORCID 0000-0002-1681-5939
Sabrina LlopSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.
Jordi JulvezSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.ORCID 0000-0003-0818-4003
Andrea BeneitoEpidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, 08003 València, Spain.ORCID 0000-0001-6560-601X
Jesús IbarluzeaSpanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029 Madrid, Spain.ORCID 0000-0002-6933-5373
Liher ImazPublic Health Division of Gipuzkoa, Basque Government, 20013 San Sebastian, Spain.ORCID 0000-0002-3777-4953
Maite FerrinHaringey Child and Adolescent Mental Health Service, Barnet, Enfield and Haringey NHS Mental Health Trust, London N15 3TH, UK.
University of the Basque Country · ESInstituto de Salud Carlos III · ESBasque Government · ESUniversitat Jaume I · ESBarnet Enfield and Haringey Mental Health Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ferritin status during prenatal brain development may influence the risk of attention deficit and hyperactivity disorder (ADHD) symptoms in childhood. We investigated the association of maternal ferritin in pregnancy and ADHD-like symptoms in offspring. A total of 1095 mother-child pairs from three birth cohorts of the INMA Project (Spain) were studied. Maternal plasma ferritin in pregnancy was measured at 11.57 weeks of gestation. Children's ADHD-like symptoms at ages 4-5 years were assessed using the ADHD Rating Scale-IV. The count model of the zero-inflated Poisson regression model showed a significant inverse association between ferritin (continuous variable) and inattention, β = -0.19 (-0.32, -0.07), for boys. Comparing ferritin level by tertiles, significant differences were observed between the first tertile ([1.98, 20.92]) and the second ([20.92, 38.79]) and third tertiles ([38.79, 216.5]) (mg/L).The number of symptoms was lower for those in the third tertile, β = -0.3 (-0.55, -0.5), and for those in the second one, β = -0.37 (-0.6, -0.14). The model stratification by sex also showed this inverse association for boys only, β = -0.21 (-0.34, -0.08). No associations were found between ferritin level and hyperactivity or total ADHD symptoms. High ferritin levels during pregnancy show a protective association with child inattentive-type ADHD symptoms.

Indexed as

Attention Deficit Disorder with HyperactivityFerritinsPrenatal Exposure Delayed EffectsChild, PreschoolCohort StudiesFemaleHumansMalePregnancyProspective StudiesRegression AnalysisSex FactorsSpainFerritinsADHD symptomschildhoodferritin statuspregnancy

Identifiers

PMID33105572
PMCPMC7659477
OpenAlexW3093914649

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.