Air trapping in usual interstitial pneumonia pattern at CT: prevalence and prognosis.

Sci Rep · 2018 · PMC6250722 · PMID 30467322

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showed a trendno p-value reported

Howerver, patients with IPF and air trapping, as determined by the E/I ratio, showed a trend toward worse prognosis during follow-up.

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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.