| Non-COPD group (n = 168) | COPD group (n = 101) | P-value |
---|---|---|---|
Age (yr) | 66.27 ± 7.44 | 72.37 ± 9.72 |  < 0.001 |
Male sex (%) | 78.57 | 68.32 | 0.082 |
Body-mass index, kg/m2 | 23.79 ± 3.35 | 21.14 ± 3.72 |  < 0.001 |
Smoking status (%) | Â | Â | 0.01 |
 Never smoker | 52.38 | 31.68 |  |
 Former smoker | 24.40 | 43.56 |  |
 Current smoker | 23.21 | 24.75 |  |
 Smoking history (pack-yr) | 35.86 ± 21.3 | 39.99 ± 22.74 |  |
Pulmonary function | |||
 FEV1- % of predicted value | 94.67 ± 18.19 | 46.35 ± 18.83 |  < 0.001 |
 FEV1:FVC ratio | 88.8 ± 9.69 | 54.86 ± 10.76 |  < 0.001 |
 COPD stage (%) |  |  | - |
  GOLD I | - | 4.95 |  |
  GOLD II | - | 35.64 |  |
  GOLD III | - | 38.61 |  |
  GOLD IV | - | 20.79 |  |
 Emphysema (%) | - | 84.15 |  |
 LAA950 (%) | 8.76 ± 9.49 | 32.53 ± 16.36 |  < 0.001 |