Lung cancer mortality in the German chromate industry, 1958 to 1998 |
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Authors: | Birk Thomas Mundt Kenneth A Dell Linda D Luippold Rose S Miksche Leopold Steinmann-Steiner-Haldenstaett Wolfgang Mundt Diane J |
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Institution: | ENVIRON Germany GmbH, Essen, Germany. tbirk@environcorp.com |
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Abstract: | OBJECTIVES: We conducted a mortality study of two German chromate production facilities and evaluated possible dose-response relationships between hexavalent chromium exposure and lung cancer. METHODS: Mortality was followed-up through 1998 and limited to those employed since each plant converted to a no-lime production process. More than 12,000 urinalysis results of chromium levels were available, as was smoking information. RESULTS: All-cause mortality indicated a healthy worker effect (standardized mortality ratio SMR] = 0.80, 95% confidence interval CI] = 0.67-0.96); however, lung cancers appeared to be increased (SMR = 1.48, 95% CI = 0.93-2.25). No clear dose-response was found in stratified analyses by duration of employment and time since hire. On the basis of urinary chromium data, lung cancer risk was elevated only in the highest exposure group (SMR = 2.09, 95% CI = 1.08-3.65). CONCLUSIONS: These data suggest a possible threshold effect of occupational hexavalent chromium exposure on lung cancer. |
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