Table 4.
Effects of dCBT-I on sleep diary parameters of the intervention group
| Week 1 | Week 8 | Diffadj | 95% CI | P | ES | |||
|---|---|---|---|---|---|---|---|---|
| n = 95 | n = 95 | |||||||
| M | SD | M | SD | |||||
| SOL (min) | 49.09 | 53.95 | 15.94 | 22.85 | –28.54 | –32.81, –24.27 | <.001 | –1.34 |
| WASO (min) | 111.69 | 102.17 | 45.12 | 41.41 | –64.22 | –71.50, –56.95 | <.001 | –1.78 |
| TST (min) | 354.59 | 109.09 | 381.50 | 82.02 | 25.34 | 15.37, 35.30 | <.001 | 0.51 |
| SE (%) |
68.76 | 18.98 | 86.10 | 11.64 | 16.09 | 14.53, 17.64 | <.001 | 2.08 |
dCBT-I, digital cognitive behavioral therapy for insomnia; SOL, sleep onset latency; WASO, wake after sleep onset; TST, total sleep time; SE, sleep efficiency; Diffadj, adjusted mean difference derived from linear mixed models; 95% CI, 95% confidence interval of the adjusted mean difference; ES, within-group effect size (Cohen’s d). M and SD refer to unadjusted means and standard deviations, respectively.