Passive smoking, as measured by hair nicotine, and severity of acute lower respiratory illnesses among children

Tob Induc Dis · 2002 · PMC2669564

Europe PMC

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a weak trendno p-value reported

Discussion Findings from this study show a weak trend of higher ETS exposure among children with more severe respiratory illnesses.

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a positive trendno p-value reported

Except for the first (least severe) group, there is some indication of a positive trend with increasing exposure to ETS by severity of illness, but there is a great deal of overlap of hair nicotine levels between categories of severity.

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did not reach statistical significanceno p-value reported

However this did not reach statistical significance.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.