Cancer Incidence Among Members of the Norwegian Trade Union of Insulation Workers

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Abstract
Insulation work has been described as an occupation with high exposure to asbestos. A cohort of members of the Norwegian Trade Union of Insulation Workers (n = 1116), hired between 1930 and 1975, was established. During 2002, the cohort was linked to the Cancer Registry of Norway. The standardized incidence ratio (SIR) of pleural mesothelioma was 12.9 (95% confidence interval [CI] = 6.0–24.6). Two cases with peritoneal mesotheliomas were found (SIR, 14.8; 95% CI = 1.8–53.4). The SIR of lung cancer was 3.0 (95% CI = 2.3–3.8). Four cases of lung cancer were observed among cork workers without any exposure to asbestos, but to cork dust and tar smoke (SIR, 5.3; 95% CI = 1.5–13.6). Our study showed a high risk of mesothelioma and an elevated risk of lung cancer among members of the Trade Union of Insulation Workers.

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