A comparative study of the etiology of adult upper and lower respiratory tract infections in the community.

Diagn Microbiol Infect Dis · 2002 · PMC7134668 · PMID 11821167

Europe PMC DOI

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closest p

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a clear trendno p-value reported

Despite the absence of a statistically significant difference in the rates of this parameter between the two groups, there is a clear trend to a higher rate of more than one etiology in the LRTI group compared to the URTI group.

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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.