ArticleSafety and health at work2026
Association Between Job Characteristics, Benzene Exposure, and Hematopoietic Cancer Risk in Subway Maintenance Workers.
Article in Safety and health at work, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The occurrence of multiple cases of hematopoietic cancers (HC) among subway train maintenance workers (MWs) at a municipally owned metro company prompted an investigation into their association with this maintenance work. Objectives: We aimed to evaluate the occurrence of HC among MWs relative to the general population and to examine the association between job characteristics, past benzene exposure, and HC risk. Methods: A cohort of 4,438 MWs was analyzed for the period 2005-2024. HC cases were identified through self-reporting and coworker reports obtained from a structured questionnaire survey. Diagnoses were confirmed via follow-up interviews. Respective benzene exposure was assessed using a job-exposure matrix (JEM) based on maintenance type and the historical use of thinners. Standardized incidence ratios were calculated to compare HC occurrence among MWs with that of the general population, and Cox proportional hazards ratio (HR) was employed to evaluate HC risk. Results: A total of eleven HC cases were identified, including leukemia ( Conclusion: Extended follow-up and additional case identification among MWs are required to clarify maintenance-specific associations with HC risk.
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