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Respiratory disease mortality among US coal miners; results after 37 years of follow-up
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  • Published on:
    Lung cancer risk in coal miners: The need for further investigations
    • Judith M Graber, Assistant Research Porfessor
    • Other Contributors:
      • Leslie T. Stayner, Ph.D. Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, USA; Robert A. Cohen, M.D. Division of Environmental and Occupational Health Sciences, School of Public Health, University of

    We thank Dr. Morfeld for his comments on our updated mortality study of the U.S. coal miners study.[1] However, we disagree with his assertion that the excess of lung cancer we observed must be attributed to smoking alone. Firstly, despite the smoking prevalence being higher in our cohort than in the U.S. population in 1970, smokers in our population were significantly less likely to be heavy smokers (> 24 cigarettes...

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    Conflict of Interest:
    None declared.
  • Published on:
    Lung cancer excess risks after coal mine dust exposure?

    Dear Editor,

    I read with interest about the updated US coalminer mortality study[1]. The lung cancer SMR was slightly elevated (SMR=1.08, 95% CI: 1.00-1.18). This excess is unexceptionable because of a higher proportion of smokers at the start of follow-up in 1969/1971 (current smokers: 54%) in comparison to the US male population in 1970 (44.1%). Internal analyses showed an association of lung cancer mortality...

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    Conflict of Interest:
    None declared.