| Non-smoker | Healthy Smoker | COPD | p value |
---|---|---|---|---|
n | 7 | 11 | 11 | NS |
Age (years) | 73.9 ± 10.5 | 65.4 ± 2.4 | 69.6 ± 2.1 | NS |
Male (% group) | 40 | 46 | 62 | NS |
Smoking index (pack-year) | N/A | 51 ± 17.4 | 66 ± 21 | NS |
FEV1 | 1.9 ± 0.4 | 2.3 ± 0.2 | 2.0 ± 0.2 | NS |
% predicted FEV1 | 89.2 ± 3.3 | 87.8 ± 3.6 | 77.9 ± 4.7 | < 0.05 |
FVC | 2.3 ± 0.7 | 3.0 ± 0.2 | 3.5 ± 0.4 | < 0.05 |
% predicted FVC | 103.8 ± 5.8 | 95.9 ± 5.9 | 103.5 ± 2.6 | NS |
FEV1/ FVC (%) | 76.3 ± 9.8 | 76.1 ± 1.3 | 58.3 ± 2.9 | < 0.05 |
Emphysema present / Emphysema status known | 0/7 | 5/10 | 8/10 | < 0.05 |
Cancer Histology | 6 ADC, 1 SCC | 5 ADC, 6 SCC | 2 ADC, 8 SCC, 1 NSCLC | < 0.05 |
Cancer Stage | 3 Stage1 4 Stage2 | 8 Stage1 3 Stage 2 | 8 Stage 1 2 Stage 2 1 Stage 3 | NS |