4 e-Letters

published between 2014 and 2017

  • Re: Occupational Asthma guidelines: a systematic quality appraisal using the AGREE II instrument. Authors' response
    Theodore Lytras

    We thank Dr. Nicholson and Prof. Cullinan for their interest in our paper,[1] and welcome the opportunity to respond to their comments and provide clarification.

    We did review the most up-to-date version of all guidelines, including the 2010 version of the BOHRF guidelines. In the "Results" section of our paper, the first column of Table 1 cites the most recent guideline versions published in the peer-reviewed...

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  • Corrections on Asthma Guidelines review
    Paul J Nicholson

    We write to correct errors in the paper Occupational asthma guidelines: a systematic quality appraisal using the AGREE II instrument 1.

    The methodology for this study states that the authors reviewed the most up to date versions of guidelines. While in their Introduction the authors cite (their reference 9) a statement from the 2010 BOHRF systematic review 2; within the Results section it is clear that they a...

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  • Lung cancer risk in coal miners: The need for further investigations
    Judith M Graber

    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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  • Lung cancer excess risks after coal mine dust exposure?
    Peter Morfeld

    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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