Evidence map›Paper›PMID 35206393›Full record

ArticleInternational journal of environmental research and public health2022

Association between Bone Lead Concentration and Aggression in Youth from a Sub-Cohort of the Birth to Twenty Cohort.

Nonhlanhla Tlotleng, Nisha Naicker, Angela Mathee, Andrew C Todd, Palesa Nkomo, Shane A Norris

Abstract read
In one paragraph

Article in International journal of environmental research and public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 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

6 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Differences in Driving Anger among Professional Drivers: A Cross-Cultural Study.International journal of environmental research and public health · 2022
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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.

Nonhlanhla TlotlengEpidemiology and Surveillance Section, National Health Laboratory Service, National Institute for Occupational Health, Braamfontein, Johannesburg 2001, South Africa.ORCID 0000-0003-1526-2495
Nisha NaickerEpidemiology and Surveillance Section, National Health Laboratory Service, National Institute for Occupational Health, Braamfontein, Johannesburg 2001, South Africa.
Angela MatheeEnvironmental Health Department, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2028, South Africa.ORCID 0000-0002-0060-829X
Andrew C ToddDepartment of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.ORCID 0000-0001-7864-009X
Palesa NkomoSAMRC Development Pathways for Health Research Unit (DPHRU), University of the Witwatersrand, Johannesburg 5050, South Africa.
Shane A NorrisSAMRC Development Pathways for Health Research Unit (DPHRU), University of the Witwatersrand, Johannesburg 5050, South Africa.ORCID 0000-0001-7124-3788

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundAn association between blood-lead levels and aggression has been demonstrated in children and adolescent youth in South Africa. However, there are limited studies that have assessed aggression as an outcome for cumulative lead exposure using bone lead concentration. This study aims to assess the association between bone lead concentration and aggressive behaviour among a sample of youth in South Africa.

methodsBone lead in 100 participants (53 males and 47 females) recruited and followed in the Birth to Twenty (BT20) Cohort were measured using 109 Cd-based, K-shell X-ray fluorescence (KXRF). The Buss-Perry Aggression questionnaire was used to measure aggressive behaviour. Linear regression models were fitted to determine the association between aggression score for physical, verbal, anger and hostility and bone lead, adjusting for known confounders.

resultsA one-microgram-per-gram increase in bone lead was found to increase the score for all four scales of aggression, but significantly only for anger (β = 0.2 [95% CI 0.04-0.370]). Psychosocial factors such as a history of family violence and exposure to neighbourhood crime were significant predictors for aggression.

conclusionsThe study provides a preliminary overview of the relationship between cumulative lead exposure and behavioural problems such as aggression. A larger sample, across exposed communities, may prove more definitive in further investigating the association between these two important public health factors and to maximize generalizability.

Indexed as

AggressionLeadAdolescentAngerChildCohort StudiesFemaleHostilityHumansMaleSurveys and QuestionnairesLeadaggressionblood leadbone leadBT20 cohortKXRFlate adolescenceSouth Africa

Identifiers

PMID35206393
PMCPMC8871669

What OpenQuestion holds

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LicenceCC BY
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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.