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International Archives of Occupational and Environmental Health

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01.11.2007 | Review

A meta-analysis of occupational trichloroethylene exposure and liver cancer

verfasst von: Dominik D. Alexander, Michael A. Kelsh, Pamela J. Mink, Jeffrey H. Mandel, Rupa Basu, Michal Weingart

Erschienen in: International Archives of Occupational and Environmental Health | Ausgabe 2/2007

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Abstract

Objective

Findings from epidemiologic studies of trichloroethylene (TCE) exposure and liver cancer have been inconsistent. To quantitatively evaluate this association and to examine sources of heterogeneity, we conducted a meta-analysis of occupational studies of TCE exposure and liver/biliary tract cancer.

Methods

We identified 14 occupational cohort studies of TCE exposed workers and one case-control study that met our inclusion criteria. Nine studies specifically identified TCE as a workplace exposure, and were classified as Group I cohort studies. Subcohorts of workers, identified within eight of these studies as more likely exposed to TCE than the total cohort, were analyzed separately.

Results

The combined liver/biliary cancer summary relative risk estimate (SRRE) for all studies was 1.08 (95% CI 0.91–1.29; heterogeneity (H)-P-value = 0.12). For the total study populations in the Group I cohorts, the SRRE was 1.14 (95% CI 0.93–1.39; H-P-value = 0.05) and for the subcohorts, the SRRE was 1.30 (95% CI 1.09–1.55). Within this subcohort analysis, the association for the European studies of workers from various industries (SRRE = 1.38; based on four studies) was higher than the association for the US studies of aerospace and aircraft workers (SRRE = 0.97, based on four studies).

Conclusion

Although positive associations were observed for some analyses, results were inconsistent across occupational groups (aerospace/aircraft vs. other industries combined), study location, and incidence versus mortality endpoints. In addition, exposure-response trends were not observed consistently across studies. Interpretation is also limited by the potential impact of uncontrolled confounding by other occupational or lifestyle exposures such as smoking or alcohol consumption. Given these limitations, the currently available epidemiologic data are not sufficient to support a causal relation between occupational TCE exposure and liver/biliary cancer.

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Titel: A meta-analysis of occupational trichloroethylene exposure and liver cancer
verfasst von: Dominik D. Alexander
Michael A. Kelsh
Pamela J. Mink
Jeffrey H. Mandel
Rupa Basu
Michal Weingart
Publikationsdatum: 01.11.2007
Verlag: Springer-Verlag
Erschienen in: International Archives of Occupational and Environmental Health / Ausgabe 2/2007
Print ISSN: 0340-0131
Elektronische ISSN: 1432-1246
DOI: https://doi.org/10.1007/s00420-007-0201-4

Live-Webinar "Chronische Unterbauch- und Viszeralschmerzen in der Praxis managen"

Springer Medizin

A meta-analysis of occupational trichloroethylene exposure and liver cancer

Abstract

Objective

Methods

Results

Conclusion

Live-Webinar "Chronische Unterbauch- und Viszeralschmerzen in der Praxis managen"

Springer Medizin

Abstract

Objective

Methods

Results

Conclusion

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