Table 4 Mean (95% confidence interval) change in questionnaire-based outcome parameters in the breathing training and control groups
between baseline and 1-month and 6-month assessments in the intention to treat population
| 1 month | 6 months | |||||||
| Breathing training | Control | Difference | p Value | Breathing training | Control | Between group | p Value | |
| ACQ | −0.24 (−0.12 to −0.36) | −0.29 (−019 to −0.49) | 0.05 (−0.16 to 0.25) | 0.70 | −0.30 (−0.17 to −0.43) | −0.13 (−0.04 to −0.31) | −0.17 (−0.38 to 0.04) | 0.12 |
| NQ | −5.51 (−3.83 to −6.86) | −4.27 (−3.00 to −5.55) | −1.24 (−3.23 to 0.75) | 0.22 | −6.70 (−8.25 to −5.15) | −3.54 (−5.11 to −1.97) | −3.16 (−5.35 to −0.97) | 0.005 |
| HAD Anxiety | −1.12 (−1.66 to −0.57) | −0.85 (−1.49 to −0.22) | −0.26 (−1.01 to 0.57) | 0.53 | −1.07 (−1.64 to −0.51) | −0.02 (−0.72 to 0.68) | −1.05 (−1.94 to −0.16) | 0.02 |
| HAD Depression | −0.32 (−0.73 to −0.09) | −0.14 (−0.67 to 0.40) | −0.18 (−0.85 to 0.48) | 0.59 | −0.31 (−0.72 to 0.10) | 0.44 (−0.08 to 0.94) | −0.75 (−1.40 to −0.10) | 0.03 |
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ACQ, Asthma Control Questionnaire; HAD, Hospital Anxiety and Depression Questionnaire; NQ, Nijmegen Questionnaire.
