Analysis and evaluation of environmental tobacco smoke exposure as a risk factor for chronic cough.

Cough · 2007 · PMC1884172 · PMID 17475014

Europe PMC DOI

hedged sentence

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closest p

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boldest claim

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highly significantno p-value reported

A study on the association between the indoor PM10 and chronic cough in 3,709 Chinese adults demonstrated highly significant differences between study areas in the prevalence of chronic cough.

also in 132,142 other papers

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.