Table 4.
CSHQ mean scores and group comparisons (ITT, n = 362)
| Group mean scores on CSHQ subscales (SD) | Change scores (SD) Baseline versus postintervention | Comparisons Active versus placebo 0–16-week Diff. | ||||||
|---|---|---|---|---|---|---|---|---|
| Baseline | Postintervention (16 weeks) | |||||||
| Active (n = 180) Imputed n = 34 | Placebo (n = 182) Imputed n = 41 | Active (n = 180) Imputed n = 38 | Placebo (n = 182) Imputed n = 35 | Active (n = 180) | Placebo (n = 182) | Z-value | P-value | |
| Bedtime resistance | 7.12 (1.885) | 7.38 (1.895) | 6.99 (1.575) | 7.33 (2.02) | −0.13 (1.845) | −0.05 (1.856) | 0.998 | 0.318 |
| Sleep onset delay | 1.67 (0.72) | 1.66 (0.716) | 1.66 (0.676) | 1.62 (0.677) | −0.01 (0.695) | −0.04 (0.66) | 0.71 | 0.478 |
| Sleep duration | 3.94 (1.269) | 3.77 (1.126) | 3.94 (1.214) | 3.88 (1.202) | 0.00 (1.338) | 0.11 (1.198) | −0.724 | 0.469 |
| Sleep anxiety | 5.13 (1.22) | 5.34 (1.573) | 5.10 (1.303) | 5.09 (1.469) | −0.03 (1.396) | −0.26 (1.358) | 1.163 | 0.245 |
| Night wakings | 3.58 (0.952) | 3.69 (0.997) | 3.46 (0.721) | 3.63 (1.033) | −0.12 (0.869) | −0.06 (1.026) | 0.19 | 0.849 |
| Parasomnias | 8.84 (1.842) | 8.6 (1.578) | 8.58 (1.457) | 8.6 (1.432) | −0.26 (1.755) | 0.00 (1.565) | −1.294 | 0.196 |
| Sleep disturbed breathing | 3.57 (1.016) | 3.49 (0.754) | 3.51 (0.909) | 3.45 (0.768) | −0.06 (0.974) | −0.05 (0.791) | 0.232 | 0.816 |
| Daytime sleepiness | 9.74 (2.763) | 9.93 (2.81) | 9.56 (2.555) | 9.69 (2.766) | −0.18 (2.284) | −0.24 (2.753) | −0.128 | 0.898 |
| Total sleep disturbance | 41.3 (6.842) | 41.38 (6.177) | 40.48 (6.166) | 40.87 (6.084) | −0.82 (6.032) | −0.51 (5.364) | −0.682 | 0.495 |
ITT, mean imputation of missing observations; CSHQ, Child Sleep Habits Questionnaire; SD, standard deviation.