ArticleAmerican journal of industrial medicine2026
Characteristics of Participants During the First Three Years of the National Firefighter Registry for Cancer, United States, January 2023-December 2025.
Article in American journal of industrial medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Factors associated with lung cancer among firefighters: a systematic literature review.BMC public health · 2025Pooled it
- Occupational health in the era of climate change and the green transition: a call for research.The Lancet regional health. Europe · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
backgroundFirefighting is a known human carcinogen, but knowledge gaps remain regarding cancer burden and risk factors among U.S. firefighters. The Firefighter Cancer Registry Act of 2018 directed the development of the National Firefighter Registry (NFR) for Cancer, a voluntary exposure registry managed by the National Institute for Occupational Safety and Health. This manuscript describes participation during the first three years of NFR enrollment (January 2023-December 2025).
methodsWe descriptively calculated frequencies and percentages of participants across demographic and occupational characteristics and stratified by enrollment completion status, work status, and method of recruitment.
resultsThere were 39,058 firefighters from all 50 states and several territories who participated in the NFR, including 4019 reporting a history of cancer. Participants were predominantly male (91%), White (83%), actively serving full time (75%), and reported various firefighting assignments. Overall, 72% of participants submitted the enrollment questionnaire, 24% did not submit the questionnaire but provided enough information to include in state cancer registry linkages, and 4% had incomplete enrollment. The largest attrition occurred at the work history section of the questionnaire, but completion rates were generally similar by demographic and occupational characteristics. A department roster-based recruitment method resulted in a slightly lower self-reported cancer prevalence through exploratory analyses, suggesting possible reduction of selection bias by cancer status.
conclusionsFindings demonstrate national engagement and high completion rates in a large, voluntary occupational registry. Continued recruitment, particularly among volunteer firefighters and other underrepresented groups, will strengthen the NFR's utility for analyzing cancer and cancer risk factors among U.S. firefighters.
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