Table 1 The characteristics of the patients in the immunohistochemistry studies
From: Glutathione S-transferase omega in the lung and sputum supernatants of COPD patients
Non-smoker N = 16 | Smoker N = 22 | COPD N = 34 | p-value | |
|---|---|---|---|---|
Age, years | 65 (13) | 63 (8) | 62 (9) | 0.543 |
Sex M:F | 8:8 | 17:5 | 27:7 | 0.103 |
Pack-years | 0 | 46 (19) | 38 (13)* | 0.000 |
FEV1 %predicted | 98 (15) | 90 (10) | 55 (23) | 0.000 |
FEV1/FVC % | 86 (9) | 83 (11) | 56 (15) | 0.000 |
MEF50 %pred | 94 (24) | 80 (37) | 34 (21) | 0.000 |
DCO %pred | 91 (15) | 78 (14) | 64 (27) | 0.004 |
DCO/VA %pred | 89 (11) | 83 (12) | 72 (24) | 0.035 |