Table 1 Clinical characteristics of the patients in immunohistochemistry analyses
Non-smokers | Smokers | COPD st I–II | COPD st IV | p-value | |
|---|---|---|---|---|---|
Total (n) | 9 | 10 | 10 | 16 | |
Male/Female | 2/7 | 9/1 | 7/3 | 10/6 | |
Age (years) | 66 (13) | 62 (7) | 60 (8) | 54 (7) | |
Pack years | 0 | 51 (11) | 32 (18) | 29 (17) | p < 0.0001 |
FEV1 (l) | 2.7 (1.4) | 3.0 (0.8) | 2.4 (0.8) | 0.6 (0.3) | p < 0.0001 |
FEV1 (% of ref) | 104 (16) | 85 (10) | 73 (13) | 20 (10) | p < 0.0001 |
FEV1/FVC (%) | 85 (10) | 79 (7) | 70 (12) | 34 (9) | p < 0.0001 |
DCO (% of ref) | 91 (18) | 79 (15) | 69 (13) | 25 (8) | p < 0.0001 |
DCO/VA (% of ref) | 90 (12) | 83 (12) | 71 (14) | 37 (10) | p < 0.0001 |