Figures & data
Figure 1 Flowchart of the study selection process.
Abbreviation: PFT, pulmonary function test.
![Figure 1 Flowchart of the study selection process.](/cms/asset/9a22b295-be60-4666-be3d-6a3d7edebbda/dcop_a_147628_f0001_b.jpg)
Table 1 Demographic and clinical characteristics of study participants (N=186)
Table 2 Comparisons of COPD and non-COPD groups
Table 3 Comparisons of newly diagnosed and known COPD patients
Table 4 Demographics and clinical characteristics of all COPD patients according to different GOLD stages (I–IV) and different 2017 GOLD COPD groups (A–D)