Rates were elevated for upper digestive and respiratory tract neoplasms (oral cavity, six observed vs 2.2 expected; oesophagus, four observed vs 1.7 expected; larynx, nine observed vs 2.4 expected), and other alcohol-related causes. In the descriptive analysis, a clear trend of decreasing risk with longer time since last exposure was observed, both for bladder cancer (from 100.8 during exposure to 14.8 20 years or more after the last exposure) and for all other causes (from 1.9 to 0.9).
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Bladder cancer mortality of workers exposed to aromatic amines: an updated analysis.
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