Table 7 Distribution of habitual exposure with number of exacerbations
Habitual exposure | ≤ 1 exacerbations (%) | ≥ 2 exacerbations (%) | Total (%) |
|---|---|---|---|
Smokers | 30 (15.2) | 59 (29.9) | 89 (45.2) |
Ex-smokers < 6 months | 8 (4.1) | 5 (2.5) | 13 (6.6) |
Ex-smokers > 6 months | 21 (10.6) | 46 (23.3) | 67 (34.0) |
Non-smokers | 13 (6.6) | 15 (7.6) | 28 (14.2) |