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Survival and mortality pattern among Swedish smelter workers
International Journal of Epidemiology
|March 1, 1980
Summary
Copper smelter workers face significantly higher mortality risks, particularly from lung cancer and circulatory diseases. Exposure in specific departments like roasters increases cancer risk and reduces life expectancy.
Area of Science:
- Occupational Health
- Environmental Epidemiology
- Toxicology
Background:
- Rönnskärsverken copper smelter employed 3919 male workers between 1928-1966.
- Worker mortality data was analyzed against general and local population statistics.
Purpose of the Study:
- To assess mortality risks associated with work history at a copper smelter.
- To identify specific work areas and exposures linked to increased disease risk.
Main Methods:
- Standardized mortality ratios and life-table analysis were employed.
- Worker data was traced using employment records and population registers.
- Dose-response and internal comparison analyses were conducted.
Main Results:
- Overall excess mortality of 18% observed compared to the general population.
- Elevated risks for tumors (39% excess) and circulatory diseases (32% excess).
- Lung cancer risk tripled vs. general population; cerebrovascular disease risk increased by 60-70%.
Conclusions:
- Occupational exposure at the copper smelter significantly impacts worker mortality.
- Roaster and arsenic departments identified as high-risk areas for cancer, especially lung cancer.
- Extended exposure in high-risk areas substantially reduces remaining life expectancy.