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. 2015 Jun 30;10:1253–1263. doi: 10.2147/COPD.S77274

Figure 1.

Figure 1

Blood concentrations of (A) neutrophils, (B) MPO protein, (C) NE protein, and (D) CRP in smokers with OPD-CB, AS, and NS during a clinically stable period at the time of inclusion.

Notes: The data are presented both as individual (dots) and median (bold lines) values (*P<0.05, Kruskal–Wallis test followed by the Mann–Whitney U-test, n=10 [never-smokers and asymptomatic smokers], n=60 [OPD-CB]).

Abbreviations: AS, asymptomatic smokers; CRP, C-reactive protein; MPO, myeloperoxidase; NE, neutrophil elastase; NS, never-smokers; OPD-CB, obstructive pulmonary disease and chronic bronchitis.