Evidence map›Paper›PMID 33147887›Full record

ArticleInternational journal of environmental research and public health2020

Study of Occupational Chromium, Iron, and Nickel Exposure and Amyotrophic Lateral Sclerosis in Denmark.

Aisha S Dickerson, Johnni Hansen, Ole Gredal, Marc G Weisskopf

Open 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. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Review
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  8. Review
  9. Associations of self-reported occupational exposures and settings to ALS: a case-control study.International archives of occupational and environmental health · 2022
    Article
  10. Review
  11. Review
  12. ALS risk factors: Industrial airborne chemical releases.Environmental pollution (Barking, Essex : 1987) · 2022
    Article
  13. Article
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

4 authors at 3 institutions in 2 countries.

Aisha S DickersonDepartment of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.ORCID 0000-0003-3929-9540
Johnni HansenDanish Cancer Society Research Center, 2100 Copenhagen, Denmark.
Ole GredalNational Rehabilitation Center for Neuromuscular Disorders, 8000 Copenhagen, Denmark.
Marc G WeisskopfDepartments Epidemiology of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
Danish Cancer Society · DKHarvard University · USJohns Hopkins University · US

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI JAIME ELIZABETH HART · 1985 to 2026
$44.6M
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 ES019188
6 · The paper itself

Abstract

Studies of occupational metal exposures and amyotrophic lateral sclerosis (ALS) have focused primarily on known neurotoxicants, including lead, mercury, selenium, and cadmium. However, these exposures are often co-occurring with other lesser studied metals. We conducted a population-based case-control study with the aim of assessing associations between occupational chromium, iron, and nickel exposures and risk of ALS. We identified ALS cases in Denmark from 1982 through 2013 from the Danish National Patient Registry and matched them to 100 controls based on birth year and sex. Cumulative metal exposures were estimated using job exposure matrices applied to occupational history from the Danish Pension Fund. Although mutually adjusted odds of ALS were higher in men with chromium exposures in the third quartile (aOR = 1.24; 95% CI 0.91, 1.69) and fourth quartile (aOR = 1.19; 95% CI: 0.80, 1.76) compared to those with no exposure, differences did not reach statistical significance. We also observed higher odds of ALS in women with nickel exposures in the third quartile (aOR = 2.21; 95% CI: 1.14, 4.28), but not for the fourth quartile (aOR = 0.61; 95% CI: 0.23, 1.64). Our findings do not suggest associations between occupational exposures to these metals and ALS. However, unavoidable non-differential misclassification from the use of JEMs may have masked truly increased risk.

Indexed as

Amyotrophic Lateral SclerosisChromiumIronNickelOccupational ExposureAdultAgedCase-Control StudiesDenmarkFemaleHumansMaleMiddle AgedRisk FactorsChromiumIronNickelALSamyotrophic lateral sclerosismetalsmotor neuron diseaseoccupational exposures

Identifiers

PMID33147887
PMCPMC7663552
OpenAlexW3095897561

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.