Evidence map›Paper›PMID 30705111›Full record

ArticleOccupational and environmental medicine2019

Population-based study of amyotrophic lateral sclerosis and occupational lead exposure in Denmark.

Aisha S Dickerson, Johnni Hansen, Aaron J Specht, Ole Gredal, Marc G Weisskopf

Abstract read
In one paragraph

Article in Occupational and environmental medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing 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

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

  1. Pooled it
  2. Population-based study of environmental/occupational lead exposure and amyotrophic lateral sclerosis: a systematic review and meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2020
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  11. Cognitive reserve in ALS: the role of occupational skills and requirements.Amyotrophic lateral sclerosis & frontotemporal degeneration · 2024
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  20. Associations of self-reported occupational exposures and settings to ALS: a case-control study.International archives of occupational and environmental 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

5 authors.

Aisha S DickersonDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.ORCID 0000-0003-3929-9540
Johnni HansenOccupation Research Unit, Institute of Cancer Epidemiology, Danish Cancer Society Research Center, Copenhagen, Denmark.
Aaron J SpechtDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
Ole GredalOccupation Research Unit, Institute of Cancer Epidemiology, Danish Cancer Society Research Center, Copenhagen, Denmark.
Marc G WeisskopfDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
The HSPH Education and Research Center of Occupational Safety and HealthT42OH008416 · OH · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI CHRISTIANI, DAVID C · 2005 to 2025
$30.5M
Training Program in Environmental EpidemiologyT32ES007069 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI LADEN, FRANCINE · 1985 to 2024
$13.9M
Population-Based Study of Environmental Risk Factors for ALSR01ES019188 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI WEISSKOPF, MARC G · 2010 to 2014
$2.0M
NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES019188NIEHS NIH HHS T32 ES007069NIOSH CDC HHS T42 OH008416
6 · The paper itself

Abstract

objectivesPrevious research has indicated links between lead (Pb) exposure and increased risk of neurodegenerative disorders, including amyotrophic lateral sclerosis (ALS). In this study, we evaluated the association between occupational Pb exposures and ALS.

methodsALS cases were ascertained through the Danish National Patient Registry from 1982 to 2013 and age and sex-matched to 100 controls. Using complete employment history since 1964 from the Danish Pension Fund, cumulative Pb exposure was estimated for each subject via a Danish job exposure matrix. Associations were evaluated using conditional logistic regression analyses and stratified by sex.

resultsFor men with >50% probability of exposure, there was an increase in odds of ALS for exposures in the 60th percentile or higher during any time 5 years prior to diagnosis (aOR: 1.35; 95% CI 1.04 to 1.76) and 10 years prior to diagnosis (aOR: 1.33; 95% CI 1.03 to 1.72). No significant associations were observed in women, and there were no linear trends seen for Pb exposures for either sex.

conclusionsOur study indicates an association between consistently higher occupational Pb exposures and ALS. These findings support those of previously reported associations between ALS and specific occupations that commonly experience Pb exposure.

Indexed as

AdultAgedAmyotrophic Lateral SclerosisDenmarkFemaleHumansLeadLogistic ModelsMaleMiddle AgedOccupational ExposurePopulation SurveillanceRisk FactorsLeadamyotrophic lateral sclerosisleadmotor neurone disease

Identifiers

PMID30705111
PMCPMC6433465

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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.