Table 4.
Descriptive statistics for commonly reported sleep variables (n = 56)
| Baseline | Posttreatment | 1 month | ||||
|---|---|---|---|---|---|---|
| M | SD | M | SD | M | SD | |
| Diary SOL | – | – | – | – | – | – |
| CBT-I | 39.50 | 27.26 | 15.81 | 8.50 | 15.90 | 7.45 |
| Sleep hygiene | 41.34 | 22.41 | 22.55 | 15.69 | 24.05 | 17.64 |
| Diary WASO | – | – | – | – | – | – |
| CBT-I | 19.96 | 17.83 | 13.71 | 14.58 | 11.23 | 2.56 |
| Sleep hygiene | 21.36 | 18.41 | 13.03 | 16.05 | 11.22 | 2.25 |
| Diary TST | – | – | – | – | – | – |
| CBT-I | 8.47 | 1.28 | 7.61 | 0.92 | 8.12 | 0.96 |
| Sleep hygiene | 8.53 | 1.80 | 8.42 | 1.57 | 8.40 | 1.15 |
| Diary SE | – | – | – | – | – | – |
| CBT-I | 88.82 | 7.09 | 93.79 | 3.64 | 94.66 | 2.71 |
| Sleep hygiene | 88.60 | 5.34 | 93.15 | 4.62 | 93.82 | 2.97 |
| Actigraphy SOL | – | – | – | – | – | – |
| CBT-I | 48.83 | 30.85 | 28.99 | 19.61 | 36.45 | 19.32 |
| Sleep hygiene | 47.68 | 29.38 | 50.48 | 33.03 | 40.79 | 19.13 |
| Actigraphy WASO | – | – | – | – | – | – |
| CBT-I | 47.41 | 16.61 | 41.66 | 12.30 | 43.16 | 18.16 |
| Sleep hygiene | 45.14 | 15.90 | 38.21 | 15.38 | 44.42 | 21.85 |
| Actigraphy TST | – | – | – | – | – | – |
| CBT-I | 7.02 | 0.83 | 6.60 | 0.81 | 6.70 | 0.89 |
| Sleep hygiene | 7.06 | 0.83 | 6.63 | 1.17 | 7.01 | 0.78 |
Reports based on all available data (not imputed). SE, sleep efficiency; SOL, sleep onset latency (min); TST, total sleep time (h); WASO, wake after sleep onset (min).