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Cancer risks of firefighters: a systematic review and meta-analysis of secular trends and region-specific differences.


ABSTRACT:

Purpose

The objective of this study was to conduct a systematic review and meta-analysis to evaluate the cancer risks among firefighters in the time course and from different geographical areas.

Method

A PubMed search was performed to identify cohort studies about cancer risk and firefighting presented with standardized incidence ratios (SIRs) or standardized mortality ratios (SMRs). Using random-effect models, meta-relative risk estimates (mSIRs, mSMRs) and 95% confidence intervals (CI) were assessed. Cohort studies with employment starting before 1950 were classified as "old", studies starting between 1950 and 1970 as "medium", and later studies as "new".

Results

The general cancer risk of firefighters was similar to the general population, but mSMR decreased over time (new studies: mSMR?=?0.81, 95% CI 0.70-0.92). We observed an increase of mSIR for melanoma of the skin and prostate cancer as well as a decrease of mSIR for stomach cancer with later employment onset. For those cancer sites, we did not observe a secular trend of mSMRs. Regional differences between relative cancer risks were particularly observed for bladder cancer.

Conclusions

Among other things, innovative firefighting techniques and better personal protective equipment have provided a safer and healthier working environment for firefighters over time leading to a reduction of overall cancer incidence and mortality ratios. Increased general preventive medical checkups and possible additional screenings for firefighters might have led to more findings of malignant melanoma of the skin and prostate cancer in the recent past.

SUBMITTER: Casjens S 

PROVIDER: S-EPMC7452930 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Cancer risks of firefighters: a systematic review and meta-analysis of secular trends and region-specific differences.

Casjens Swaantje S   Brüning Thomas T   Taeger Dirk D  

International archives of occupational and environmental health 20200418 7


<h4>Purpose</h4>The objective of this study was to conduct a systematic review and meta-analysis to evaluate the cancer risks among firefighters in the time course and from different geographical areas.<h4>Method</h4>A PubMed search was performed to identify cohort studies about cancer risk and firefighting presented with standardized incidence ratios (SIRs) or standardized mortality ratios (SMRs). Using random-effect models, meta-relative risk estimates (mSIRs, mSMRs) and 95% confidence interva  ...[more]

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