Table 2.
Inflammatory cells in induced sputum
| Non-smokers | Smokers without COPD | COPD | |
|---|---|---|---|
| Total cells (×105cells/g) |
36.6 ± 9.1 |
45.8 ± 17.5 |
39.4 ± 12.5 |
| Macrophage (%) |
35.5 ± 7.2 |
22.5 ± 11.2 |
8.3 ± 2.8 ** |
| Lymphocyte (%) |
2.9 ± 0.5 |
3.3 ± 0.9 |
3.8 ± 0.7 |
| Neutrophil (%) |
61.1 ± 7.3 |
73.8 ± 11.8 |
82.5 ± 4.0 ** |
| Eosinophil (%) | 0.5 ± 0.3 | 0.5 ± 0.5 | 5.5 ± 2.0 * |
Results are means ± SEMs. Comparisons between groups were made by Student's t-tests (* p ≤ 0.05, ** p ≤ 0.01, compared with non-smokers).