Summary of outcomes for the treatment and placebo groups
| Score | Treatment | Placebo | Treatment versus placebo |
|---|---|---|---|
| √, significant improvement from pre- to post-intervention; ×, no significant improvement from pre- to post-intervention;√√, improvement significantly greater in treatment group than in placebo group. | |||
| Total | √ | × | √√ |
| Breathing | √ | √ | √√ |
| Cough | √ | √ | √√ |
| Voice | √ | × | √√ |
| Upper airway | √ | × | √√ |
| Limitation | √ | √ | √√ |