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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Eur Respir J. 2013 Feb 21;43(1):195–203. doi: 10.1183/09031936.00157712

Figure 2.

Figure 2

Scatterplots and regression lines for DLCO % predicted by a) post-bronchodilator (BD) FEV1 % predicted, b) Tricuspid regurgitant velocity, c) sputum neutrophil percent, d) post-BD FEV1/FVC, and e) natural logarithm (ln) of the fraction of lung <-950 for ever smokers (positive symbols,+, and solid lines) and never smokers (open squares, □, and dashed lines). Pearson correlation coefficients (r) and significance values (p) are shown nearest to the regression lines of smokers (bottom) and never smokers (top) for correlations between the independent variable in each graph and DLCO % predicted.