Evidence map›Paper›PMID 26583610›Full record

ArticleEpidemiology (Cambridge, Mass.)2016

Amyotrophic Lateral Sclerosis and the Military: A Population-based Study in the Danish Registries.

Ryan M Seals, Marianthi-Anna Kioumourtzoglou, Johnni Hansen, Ole Gredal, Marc G Weisskopf

Open access · greenAbstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Environmental toxins in neurodegeneration - a narrative review.Neurological research and practice · 2025
    Review
  4. Occupational history associates with ALS survival and onset segment.Amyotrophic lateral sclerosis & frontotemporal degeneration · 2023
    Article
  5. Review
  6. Article
  7. Observational
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Occupational formaldehyde and amyotrophic lateral sclerosis.European journal of epidemiology · 2017
    Article
  17. Article
  18. Review
  19. Article
  20. 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

5 authors at 1 institution in 1 country.

Ryan M SealsFrom the aDepartment of Epidemiology, bDepartment of Environmental Health, Harvard School of Public Health, Boston, MA; cCenter for Cancer Research, The Danish Cancer Society, Copenhagen, Denmark; and dRehabilitation Centre for Neuromuscular Diseases, Copenhagen, Denmark.
Marianthi-Anna Kioumourtzoglou
Johnni Hansen
Ole Gredal
Marc G Weisskopf
Danish Cancer Society · DK

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
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 5R01ES019188-02NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES019188NIEHS NIH HHS T32 ES007069NIEHS NIH HHS T32 ES 07069
6 · The paper itself

Abstract

backgroundPrior studies have suggested that military service may be associated with the development of amyotrophic lateral sclerosis (ALS). We conducted a population-based case-control study in Denmark to assess whether occupation in the Danish military is associated with an increased risk of developing ALS.

methodsThere were 3,650 incident cases of ALS recorded in the Danish National Patient Registry between 1982 and 2009. Each case was matched to 100 age- and sex-matched population controls alive and free of ALS on the date of the case diagnosis. Comprehensive occupational history was obtained from the Danish Pension Fund database, which began in 1964.

results2.4% (n = 8,922) of controls had a history of employment in the military before the index date. Military employees overall had an elevated rate of ALS (odds ratio [OR] = 1.3; 95% confidence interval [CI]: 1.1, 1.6). A 10-year increase in years employed by the military was associated with an OR of 1.2 (95% CI: 1.0, 1.4), and all quartiles of time employed were elevated. There was little suggestion of a pattern across calendar year of first employment, but there was some evidence that increasing age at first employment was associated with increased ALS rates. Rates were highest in the decade immediately following the end of employment (OR = 1.6; 95% CI: 1.2, 2.2).

conclusionsIn this large population-based case-control study, employment by the military is associated with increased rates of ALS. These findings are consistent with earlier findings that military service or employment may entail exposure to risk factors for ALS.

Indexed as

RegistriesAdultAgedAged, 80 and overAmyotrophic Lateral SclerosisCase-Control StudiesDenmarkEmploymentFemaleHumansMaleMiddle AgedMilitary PersonnelOccupational ExposureOdds RatioRisk Factors

Identifiers

PMID26583610
PMCPMC5119482
OpenAlexW2418316833

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.