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Severity and duration of exacerbations during the study.
| Placebo | Active treatment | |
|---|---|---|
| Total number of exacerbations | 67 | 24 |
| Severity | ||
| Mild | 21 (31.3%) | 4 (16.7%) |
| Moderate | 44 (65.7%) | 19 (79.2%) |
| Severe | 2 (3.0%) | 1 (4.2%) |
| Duration (days) | 3.3 ± 2.57 | 3.3 ± 2.45 |
