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International Archives of Occupational and Environmental Health

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24-12-2023 | Leukemia | Original Article

Occupational-related exposure to diesel exhaust and risk of leukemia: systematic review and meta-analysis of cohort studies

Authors: Darshi Shah, Vincent DeStefano, Giulia Collatuzzo, Federica Teglia, Paolo Boffetta

Published in: International Archives of Occupational and Environmental Health | Issue 2/2024

Abstract

Purpose

Diesel exhaust (DE) is an established lung carcinogen. The association with leukemia is not well established. We conducted a systematic review and meta-analysis of cohort studies to determine the association between occupational DE exposure and risk of leukemia.

Methods

A systematic literature review was performed to identify all cohort studies on occupational exposure to DE and associated risk of leukemia. STROBE guidelines and PECOS criteria were followed. Meta-analyses with fixed effects (and random-effects model in cases of high heterogeneity) were performed to calculate summary relative risks (RR) and 95% confidence intervals (CI), including subgroup analyses by outcome (mortality or incidence), sex, geographic region, industry type, and study quality. Study quality was assessed using the the Joanna Briggs Institute (JBI) critical appraisal checklist for cohort studies.

Results

Of the 30 studies retained, 20 (8 from North America, 12 from Europe) reported a total of 33 estimates of the risk of leukemia. Overall, the relative risk (RR) of leukemia was 1.01 (95% CI = 0.97–1.05, I² = 21.2%, n = 33); corresponding results for leukemia incidence and mortality were RR = 1.02 (95% CI = 0.98–1.06, I² = 27.9%, n = 19) and RR = 0.91 (95% CI = 0.81–1.02, I² = 0.0%, n = 15), respectively. The main results were confirmed in analyses by sex and geographic area. A statistically significant association was detected for miners (RR = 1.58, 95% CI = 1.15–2.15, I² = 77.0%, n = 2) but not for other occupational groups. Publication bias was not detected (p = 0.7).

Conclusion

Our results did not indicate an association between occupational DE exposure and leukemia, with the possible exception of miners. Residual confounding cannot be excluded.

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Title: Occupational-related exposure to diesel exhaust and risk of leukemia: systematic review and meta-analysis of cohort studies
Authors: Darshi Shah
Vincent DeStefano
Giulia Collatuzzo
Federica Teglia
Paolo Boffetta
Publication date: 24-12-2023
Publisher: Springer Berlin Heidelberg
Keyword: Leukemia
Published in: International Archives of Occupational and Environmental Health / Issue 2/2024
Print ISSN: 0340-0131
Electronic ISSN: 1432-1246
DOI: https://doi.org/10.1007/s00420-023-02034-y

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Occupational-related exposure to diesel exhaust and risk of leukemia: systematic review and meta-analysis of cohort studies

Abstract

Purpose

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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