Fig 1.
Flow chart of the study participants.
Table 1.
Characteristics of patients with COPD with and without asthma-like features.
Table 2.
Longitudinal changes in CAT score, PFTs, and CT measurements.
Table 3.
Annual changes in CAT score, PFTs, and CT measurements: Intra- and inter-group comparisons between patients with COPD with and without asthma-like features.
Fig 2.
Changes in radiological parameters over two years of follow-up.
Notes: Radiological parameters were compared between enrollment and two-year follow-up with the Wilcoxon signed-rank test. WA% shows the mean wall area percentage at the 5th generation of bronchi. The thick horizontal bars at the sides of each graph show the median, while the thin horizontal bars at the sides of each graph show the interquartile range. Abbreviations: ALF, asthma-like features; LAA, low-attenuation area; CSA<5, the cross-sectional area of pulmonary vessels < 5 mm2; WA%, wall area percentage; NS, not significant.