Questionnaire scores
| Questionnaires mean (range) | Baseline (n=15) | Month 1 (n=15) | p-value* | Baseline (n=8) | Month 3 (n=8) | p-value* |
| K-BILD | 56 (25-99) | 57 (18-100) | 0.975 | 61 (29-91) | 67 (46-94) | 0.208 |
| LCQ | 16 (9-21) | 16 (8-21) | 0.875 | 17 (9-20) | 17 (10-21) | 0.484 |
| Cough VAS | 37 (0-87) | 45 (3-89) | 0.363 | 34 (1-87) | 37 (2-91) | 0.446 |
| Urge to cough VAS | 39 (2-87) | 41 (4-85) | 0.530 | 32 (2-87) | 37 (1-90) | 0.271 |
* Wilcoxon's signed rank test was used as data was not normally distributed