Home noninvasive ventilatory support for patients with chronic obstructive pulmonary disease: patient selection and perspectives.

Int J Chron Obstruct Pulmon Dis · 2018 · PMC5836655 · PMID 29535515

Europe PMC DOI

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a clear trendno p-value reported

2 In the Home-NIV studies outlined in Table 2 and Figure 1 , a clear trend toward the more frequent use of masks that cover the nose and mouth can be seen.

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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.