Table 3.
Total sleep time (hours) at pre- and post-treatment.
| Pre-treatment | Post-treatment | Post minus Pre Difference | t | P | Effect size | |
|---|---|---|---|---|---|---|
| Whole group | ||||||
| WL (n = 15) | 6.23 (2.47) | 5.57 (2.37) | 0.67 (1.93) | 1.34 | 0.10 | 0.35 |
| CBT (n = 17) | 6.68 (1.88) | 6.65 (2.21) | −0.03 (1.397) | 0.09 | 0.47 | 0.02 |
| DMBI (n = 17) | 6.21 (2.05) | 7.00 (2.54) | 0.79 (1.64) | −2.00 | 0.03* | 0.48+ |
| Subgroup | ||||||
| WL (n = 7) | 4.14 (1.07) | 4.36 (1.49) | 0.21 (1.15) | −0.49 | 0.32 | 0.19 |
| CBT (n = 5) | 4.60 (0.82) | 4.30 (1.15) | −0.30 (1.04) | 0.65 | 0.28 | 0.29 |
| DMBI (n = 6) | 4.08 (1.24) | 5.17 (0.68) | 1.08 (1.36) | −1.96 | 0.05* | 0.80++ |
Note.WL: waitlist control; CBT: cognitive-behavioural therapy; DMBI: Dejian mind-body intervention. Subgroup included participants who totally slept for <6 hours/night at baseline. Standard deviations are in parentheses. *P ≤ 0.05, +medium effect size, ++large effect size.