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) |