Cough scoring system adapted from Hsu et al7
| Score | Daytime | Score | Night-time |
|---|---|---|---|
| 0 | No cough during the day | 0 | No cough during the night |
| 1 | Cough for one short period | 1 | Cough on waking only |
| 2 | Cough for more than two short periods | 2 | Wake once or early due to cough |
| 3 | Frequent coughing, which did not interfere with usual daytime activities | 3 | Frequent waking due to coughs |
| 4 | Frequent coughing, which did interfere with usual daytime activities | 4 | Frequent coughs most of the night |
| 5 | Distressing cough most of the day | 5 | Distressing cough most of the night |