Characterizing undiagnosed chronic obstructive pulmonary disease: a systematic review and meta-analysis.

Respir Res · 2018 · PMC5803996 · PMID 29415723

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showed a trendno p-value reported

The presence of wheezing (OR 1.20, 95% CI 0.99–1.44, 2 studies) and dyspnea (OR 1.13 95% CI 0.99–1.29, 2 studies) showed a trend towards association.

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