Table 1.
Subject demographics. Data shown are mean (sd). S: smokers, FEV1: forced expiratory volume in 1 s, FVC: forced vital capacity, and ICS: inhaled corticosteroid.
| S |
COPD |
|||||
|---|---|---|---|---|---|---|
| ELISA study 1 | ELISA study 2 | Western blot study | ELISA study 1 | ELISA study 2 | Western blot study | |
| n | 9 | 8 | 4 | 10 | 8 | 4 |
| GOLD stage I | n/a | n/a | n/a | 3 | 2 | 3 |
| GOLD stage II | n/a | n/a | n/a | 6 | 5 | 1 |
| GOLD stage III | n/a | n/a | n/a | 1 | 1 | 0 |
| Age (yrs) | 69.6 (5.5) | 67.9 (10.7) | 69.8 (8.5) | 68.4 (6.2) | 68.5 (8.1) | 67.3 (6.1) |
| Sex (M/F) | 4/5 | 3/5 | 4/0 | 6/4 | 5/3 | 2/2 |
| FEV1 (L) | 2.3 (0.5) | 1.9 (0.2) | 2.8 (0.4) | 1.8 (0.5) | 1.8 (0.6) | 2.0 (0.9) |
| FEV1 % predicted | 100.9 (18.1) | 86.5 (9.1) | 110.5 (37.7) | 71.5 (15.1) | 65.4 (16.1) | 85.5 (13.8) |
| FVC (L) | 3.1 (0.6) | 2.6 (0.3) | 3.9 (0.7) | 3.0 (0.6) | 3.3 (0.6) | 4.0 (1.9) |
| FEV1/FVC ratio (%) | 75.1 (5.7) | 82.2 (12.4) | 72.4 (8.6) | 61.1 (7.9) | 55.2 (16.3) | 49.4 (5.9) |
| Pack year history | 36.3 (26.3) | 46.4 (17.3) | 20.7 (5.0) | 64.7 (37.2) | 48.3 (30) | 45.3 (29.4) |
| Current/ex-smoker | 3/6 | 5/3 | 2/2 | 6/4 | 6/2 | 2/2 |
| ICS users | 0 | 0 | 0 | 4 | 4 | 0 |