Fig. 2
From: The total-breath method yields higher values of DLCO and TLC than the conventional method
Bland–Altman plots of the difference between DLCOTB and DLCOCS (Panel A) or TLCTB and TLCCS (Panel B) versus their respective mean values. There was no statistical relationship between the difference and the mean. The lines indicate a difference of zero, and the three groups of healthy control subjects and patients of GOLD grades 1/2 or 3/4 are indicated by different symbols and colors