Pneumonic vs nonpneumonic acute exacerbations of COPD.

Chest · 2002 · PMC7094389 · PMID 12377851

Europe PMC DOI

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a clear trendno p-value reported

There was no significant difference in the distribution of the exacerbations according to the classification of Anthonisen et al 2 between the two groups, but there was a clear trend to a higher rate of type 1 exacerbation in then PNAE 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.