Evidence map›Paper›PMID 24034783›Full record

ArticleEnvironmental research2013

Lead, mercury, and cadmium exposure and attention deficit hyperactivity disorder in children.

Stephani Kim, Monica Arora, Cristina Fernandez, Julio Landero, Joseph Caruso, Aimin Chen

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 3 pooled it
7.7field-weighted citation impact, top 2% 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

52 citing papers in PubMed, 3 syntheses or guidelines pooled it, 143 citations in OpenAlex.

  1. Pooled it
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  3. The Association between Lead and Attention-Deficit/Hyperactivity Disorder: A Systematic Review.International journal of environmental research and public health · 2019
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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

6 authors at 3 institutions in 1 country.

Stephani KimDivision of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
Monica Arora
Cristina Fernandez
Julio Landero
Joseph Caruso
Aimin Chen
Creighton University · USUniversity of Cincinnati · USUniversity of Cincinnati Medical Center · US

Funding

REPRODUCTIVE AND DEVELOPMENTAL TOXICOLOGY RESEARCHP30ES006096 · NIEHS · UNIVERSITY OF CINCINNATI · PI YADAV, JAGJIT S · 1992 to 2022
$35.4M
Human developmental toxicity of metal mixture exposure from e-waste recyclingRC4ES019755 · NIEHS · UNIVERSITY OF CINCINNATI · PI CHEN, AIMIN · 2010 to 2010
$1.7M
NIEHS NIH HHS P30 ES006096NIEHS NIH HHS P30ES006096NIEHS NIH HHS RC4 ES019755NIEHS NIH HHS RC4ES09755
6 · The paper itself

Abstract

backgroundThere is limited research examining the relationship between lead (Pb) exposure and medically diagnosed attention deficit hyperactivity disorder (ADHD) in children. The role of mercury (Hg) and cadmium (Cd) exposures in ADHD development is even less clear.

objectivesTo examine the relationship between Pb, Hg, and Cd and ADHD in children living inside and outside a Lead Investigation Area (LIA) of a former lead refinery in Omaha, NE.

methodsWe carried out a case-control study with 71 currently medically diagnosed ADHD cases and 58 controls from a psychiatric clinic and a pediatric clinic inside and outside of the LIA. The participants were matched on age group (5-8, 9-12 years), sex, race (African American or Caucasians and others), and location (inside or outside LIA). We measured whole blood Pb, total Hg, and Cd using inductively coupled plasma mass spectrometry.

resultsInside the LIA, the 27 cases had blood Pb geometric mean (GM) 1.89 µg/dL and the 41 controls had 1.51 µg/dL. Outside the LIA, the 44 cases had blood Pb GM 1.02 µg/dL while the 17 controls had 0.97 µg/dL. After adjustment for matching variables and maternal smoking, socioeconomic status, and environmental tobacco exposure, each natural log unit blood Pb had an odds ratio of 2.52 with 95% confidence interval of 1.07-5.92. Stratification by the LIA indicated similar point estimate but wider CIs. No associations were observed for Hg or Cd.

conclusionsPostnatal Pb exposure may be associated with higher risk of clinical ADHD, but not the postnatal exposure to Hg or Cd.

Indexed as

Heavy Metal PoisoningAttention Deficit Disorder with HyperactivityCase-Control StudiesChildChild, PreschoolFemaleHumansLogistic ModelsMaleMetals, HeavyPoisoningMetals, HeavyADHDAgency for Toxic Substances and Disease RegistryAmerican Psychiatric AssociationAmerican Smelting and Refining CompanyAPAASARCOATSDRattention deficit hyperactivity disorderAttention deficit hyperactivity disorderBLLblood lead levelcadmiumCadmiumCase-control studyCdCDCCenters for Disease Control and PreventionCHEERChildren′s Health and Environment ResearchCIconfidence intervalDDWDiagnostic and Statistical Manual of Mental Disorders, 4th Editiondouble deionized waterDSM-IVEnvironmental Protection AgencyEnvironmental Tobacco SmokeEPAETSgeometric meanGMHeavy metalsHgICP-MSinductively coupled plasma mass spectrometryleadLeadLead Investigation AreaLIAlimit of detectionLODmercuryMercuryNational Health and Nutrition Examination SurveyNational Priorities ListNENebraskaNHANESNPLodds ratioORparts per billionPbppbSESsocioeconomic statusSRMstandard reference material

Identifiers

PMID24034783
PMCPMC3847899
OpenAlexW2067279343

What OpenQuestion holds

Textmetadata
LicenceTDM
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.