Azithromycin and cough-specific health status in patients with chronic obstructive pulmonary disease and chronic cough: a randomised controlled trial.

Respir Res · 2013 · PMC3835397 · PMID 24229360

Europe PMC DOI

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a clear trendno p-value reported

Moreover, there was a clear trend for azithromycin to increase the time to the first exacerbation compared to placebo.

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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.