Table 3

 Comparison of mean (SD) pre-intervention symptom scores for participants in the treatment and placebo groups (Mann-Whitney U test)

ScoreTreatment(N = 43)Placebo(N = 44)p value
Total symptom32.9 (16.0)30.4 (12.9)0.634
Breathing7.5 (4.1)6.9 (4.1)0.591
Cough8.6 (3.0)7.7 (3.4)0.119
Voice7.0 (5.8)7.8 (4.7)0.892
Upper airway8.5 (6.4)7.8 (5.1)0.878
Limitation2.3 (1.1)2.3 (1.1)0.715