Subjects n | 257 | 116 | 22 |
Age yrs | 50.71±0.70 | 68.83±0.93 | 47.07±1.64 |
Male sex | 146 (56.8) | 64 (55.17) | 7 (31.82) |
Pack-yrs smoked | 15.30±0.91 | 46.31±2.69 | 0 |
Current smoker | 13 (5.06) | 32 (27.58) | 0 |
Never smoked | 64 (24.90) | 0 | 22 |
FEV1 post BD L | 1.93±0.07 | 1.89±0.86 | 4.56±0.33 |
FEV1 % predicted | 57.67±2.11 | 43.43±1.66 | 101.40±7.59 |
FEV1/FVC post BD | 0.46±0.01 | 0.37±0.20 | 0.74±0.01 |
KCO mmol·min−1·kPa·L−1 | 1.12±0.03 | 1.09±0.86 | 1.74±0.09 |
KCO % predicted | 71.35±1.34 | 56.58±4.21 | 97.50±0.71 |
COPD | 208 (80.93) | 116 (100) | 0 |
Emphysema | 158 (61.47) | 38 (32.76)# | Not scanned |
Chronic bronchitis | 80 (31.50) | 68 (58.62) | 0 |
Anti-elastin antibody IU·mL−1 | 31.18±5.39 | 5.90±0.88 | 68.04±11.98 |
Anti-CCP antibody IU·mL−1 | 2.68±0.49 | 18.01±8.13 | 1.34±0.76 |
Anti-MCV antibody IU·mL−1 | 23.57±5.04 | 39.12±12.09 | 15.87±6.92 |
Positive anti-CCP >10 IU·mL−1 | 8±3.2 | 6±5.2 | 0 |
Positive anti-MCV >20 IU·mL−1 | 34±13.4 | 20±17.7 | 2±9.1 |