Evidence map›Paper›PMID 23008274›Full record

ArticleEnvironmental health perspectives2012

Prenatal methylmercury, postnatal lead exposure, and evidence of attention deficit/hyperactivity disorder among Inuit children in Arctic Québec.

Olivier Boucher, Sandra W Jacobson, Pierrich Plusquellec, Eric Dewailly, Pierre Ayotte, Nadine Forget-Dubois, Joseph L Jacobson, Gina Muckle

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 91 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
91citing papers in PubMed, 7 pooled it
10.7field-weighted citation impact, top 1% 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

91 citing papers in PubMed, 7 syntheses or guidelines pooled it, 191 citations in OpenAlex.

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  4. A Systematic Review and Meta-analysis of Chemical Exposures and Attention-Deficit/Hyperactivity Disorder in Children.Prevention science : the official journal of the Society for Prevention Research · 2024
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31 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

8 authors at 3 institutions in 2 countries.

Olivier BoucherCentre de Recherche du Centre hospitalier universitaire de Québec, Québec, Québec, Canada.
Sandra W Jacobson
Pierrich Plusquellec
Eric Dewailly
Pierre Ayotte
Nadine Forget-Dubois
Joseph L Jacobson
Gina Muckle
Centre hospitalier universitaire de Québec · CAWayne State University · USUniversité de Sherbrooke · CA

Funding

Environmental Contaminants and School-Age DevelopmentR01ES007902 · NIEHS · WAYNE STATE UNIVERSITY · PI JACOBSON, JOSEPH L · 1997 to 2008
$5.0M
NIEHS NIH HHS R01 ES007902NIEHS NIH HHS R01-ES007902
6 · The paper itself

Abstract

backgroundPrenatal exposure to methylmercury (MeHg) and polychlorinated biphenyls (PCBs) has been associated with impaired performance on attention tasks in previous studies, but the extent to which these cognitive deficits translate into behavioral problems in the classroom and attention deficit/hyperactivity disorder (ADHD) remains unknown. By contrast, lead (Pb) exposure in childhood has been associated with ADHD and disruptive behaviors in several studies.

objectivesIn this study we examined the relation of developmental exposure to MeHg, PCBs, and Pb to behavioral problems at school age in Inuit children exposed through their traditional diet.

methodsIn a prospective longitudinal study conducted in the Canadian Arctic, exposure to contaminants was measured at birth and at school age. An assessment of child behavior (n = 279; mean age = 11.3 years) was obtained from the child's classroom teacher on the Teacher Report Form (TRF) from the Child Behavior Checklist, and the Disruptive Behavior Disorders Rating Scale (DBD).

resultsCord blood mercury concentrations were associated with higher TRF symptom scores for attention problems and DBD scores consistent with ADHD. Current blood Pb concentrations were associated with higher TRF symptom scores for externalizing problems and with symptoms of ADHD (hyperactive-impulsive type) based on the DBD.

conclusionsTo our knowledge, this study is the first to identify an association between prenatal MeHg and ADHD symptomatology in childhood and the first to replicate previously reported associations between low-level childhood Pb exposure and ADHD in a population exposed to Pb primarily from dietary sources.

Indexed as

Environmental ExposureAdolescentArctic RegionsAttention Deficit and Disruptive Behavior DisordersAttention Deficit Disorder with HyperactivityChildChild BehaviorChild Behavior DisordersChromatography, GasConduct DisorderEnvironmental MonitoringEnvironmental PollutantsFemaleFetal BloodHumansInfant, NewbornEnvironmental PollutantsLeadMethylmercury CompoundsPolychlorinated Biphenyls

Identifiers

PMID23008274
PMCPMC3491943
OpenAlexW1981402450

What OpenQuestion holds

Textmetadata
LicenceCC0
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.