Table 2.
Effects of intervention on sleep related outcomes
| Outcome | Didgeridoo group | Control group | Raw difference*(95% CI) | Adjusted difference†(95% CI) |
|---|---|---|---|---|
| Epworth scale | ||||
| At 4 months | 7.4 (2.3) | 9.6 (6.0) | ||
| Change from baseline | −4.4 (3.7) | −1.4 (2.6) | −3.0 (−5.7 to −0.3), P=0.03 | −2.8 (−5.4 to −0.2), P=0.04 |
|
Pittsburgh quality of sleep index
|
|
|
|
|
| At 4 months | 4.3 (2.1) | 5.6 (2.7) | ||
| Change from baseline | −0.9 (1.6) | −0.2 (1.7) | −0.7 (−2.1 to 0.6), P=0.27 | −0.8 (−2.3 to 0.8), P=0.30 |
|
Partner rating of sleep disturbance
|
|
|
|
|
| At 4 months | 2.3 (1.4) | 4.8 (2.2) | ||
| Change from baseline | −3.4 (2.4) | −0.6 (1.9) | −2.8 (−4.7 to −0.9), P<0.01 | −2.7 (−4.2 to −1.2), P<0.01 |
|
Apnoea-hypopnoea index
|
|
|
|
|
| At 4 months | 11.6 (8.1) | 15.4 (9.8) | ||
| Change from baseline | −10.7 (7.7) | −4.5 (6.9) | −6.2 (−12.3 to −0.1), P=0.05 | −6.6 (−13.3 to −0.1), P=0.05 |
*
Two sample t tests.
†
Analysis of covariance with adjustment for severity of disease (apnoea-hypopnoea index and Epworth scale) and weight change during study period.