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. 2017 Jul 4;12:1933–1946. doi: 10.2147/COPD.S140243

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

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Comparison of bacterial communities between smokers with or without COPD.

Notes: NMDS with AMOVA was conducted based on jclass distance matrix. (A) Indicated that bacterial communities between controls and COPD were different (P=0.018, AMOVA); (B) suggested that no difference was observed between group 1 and group 2 (P=0.818, AMOVA) and (C) implied that there is no difference between GOLD A–D groups. The COPD patients included two subgroups: group 1 (FEV₁%pred ≥50%) and group 2 (FEV₁%pred <50%).

Abbreviations: AMOVA, analysis of molecular variance; FEV₁%pred, predicted percent of forced expiratory volume in 1 s; GOLD, Global Initiative on Obstructive Lung Disease; NMDS, nonmetric multidimensional scaling.