Table 1.
Characteristics of Study Subjects
| Characteristics | Lung Cancer | COPD | Control |
|---|---|---|---|
| Number of subjects | 20 | 27 | 13 |
| Age (mean ± SD) | 67 ± 10 | 68 ± 9 | 58 ± 15 |
| Males, n (%) | 10 (50) | 17 (63) | 6 (46) |
| Asthma diagnosis, n (%) | 3 (15) | 5 (19) | 3 (23) |
| Spirometry (mean ± SD) | |||
| FEV1 (% of predicted) | 67 ± 17 | 68 ± 25 | 91 ± 20 |
| FVC (% of predicted) | 86 ± 12 | 88 ± 24 | 91 ± 20 |
| FEV1/FVC | 59 ± 12 | 56 ± 12 | 78 ± 6 |
| Smoking status, n(%) | |||
| Current smoker | 13 (65) | 7 (26) | 0 |
| Former smoker | 6 (30) | 18 (67) | 4 (31) |
| Never smoker | 1 (5) | 2 (7) | 9 (69) |
| Pack/years in smokers (mean ± SD) | 44 ± 18 | 43 ± 28 | 8 ± 15 |
| Treatment at time of review, n (%) | |||
| Antimicrobial therapy | 0 | 0 | 0 |
| Inhaled corticosteroid therapy | 5 (25) | 11 (41) | 4 (31) |
| Inhaled bronchodilator therapy | 6 (30) | 13 (48) | 4 (31) |
| Systemic corticosteroid therapy | 1 (5) | 0 | 1 (7) |
Abbreviations: FEV1 Forced Expiratory Volume in one second, FVC Forced Vital Capacity, NTHi Non-Typeable Haemophilus