Table 3 The characteristics of the patients providing sputum samples
From: Glutathione-S-transferases in lung and sputum specimens, effects of smoking and COPD severity
| Â | Non-smoker N = 3 | Chronic bronchitis N = 3 | COPD N = 6 | p-value |
|---|---|---|---|---|
Age, years | 45 (21) | 44 (16) | 60 (7) | 0.181 |
Sex M:F | 3:0 | 3:0 | 4:2 | 0.301 |
Pack-years | 0 | 29 (15) | 48 (18) | 0.005 |
FEV1 %predicted | 113 (19) | 101 (4) | 61 (21) | 0.021 |
FEV1/FVC % | 88 (2) | 80 (1) | 64 (15) | 0.115 |
MEF50 %pred | 131 (47) | 87 (12) | 36 (20) | 0.006 |
DCO %pred | 92 (7) | 95 (6) | 63 (24) | 0.053 |
DCO/VA %pred | 100 (5) | 99 (8) | 75 (31) | 0.266 |