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Does passive smoking increase the frequency of health service contacts in children with asthma?
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  • Published on:
    ETS and asthma: U shaped effect? - Author's response
    • , Professor
    • Other Contributors:
      • Iain K Crombie
    Dear Editor

    Dr McFadden is putting forward an interpretation of the small non- significant decrease in asthma episode contacts seen amongst those with moderate exposure to passive smoking. In our view this is unwise. The effect could well be due simply to the play of chance. Further we have shown that non-clinical factors have a dominant influence on visit frequency and that the frequency of contacts is a poor measu...

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    Conflict of Interest:
    None declared.
  • Published on:
    ETS and asthma: U shaped effect?
    • , Retired
    • Other Contributors:
      • Michael J. McFadden
    Dear Editor,

    If the abstract indicates correctly that children of totally non-smoking parents were not included in the study, I see that as a significant weakness.

    The study found, as might be expected by many, an increase in contacts for asthma episodes among children most heavily exposed to environmental tobacco smoke (ETS).

    However, it also found a non-significant but noteworthy decrease in asthma epi...

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    Conflict of Interest:
    None declared.