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. 2017 Nov 1;12:3211–3219. doi: 10.2147/COPD.S137578

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© 2017 Tufvesson et al. This work is published and licensed by Dove Medical Press Limited

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Sputum purulence scores during stable phase (A) and exacerbation (B) in COPD patients with (n=4 during stable phase, and n=5 during exacerbation) or without (n=27 during stable phase, and n=16 during exacerbation) bronchiectasis according to HRCT.

Notes: Data are presented as individual dots and bars for median and IQR. P-value for statistical significance between COPD patients with or without bronchiectasis is shown in the figure.

Abbreviations: HRCT, high-resolution computed tomography; IQR, interquartile range.