Table 4.
Actigraphy outcomes at baseline and Week 2 by TIB condition.
| 6h TIB (n=41)
|
|||||||
|---|---|---|---|---|---|---|---|
| Actigraphy Variable | 8h TIB (n=17) |
Late Bedtime (n=18) |
Early Risetime (n=23) |
8h vs. 6h TIB p-value |
|||
| Mean | SD | Mean | SD | Mean | SD | ||
| Time in Bed (hh:mm) | |||||||
| Baseline | 8:01 | 0:06 | 7:58 | 0:07 | 8:00 | 0:09 | 0.53 |
| Week 2 | 8:01 | 0:30 | 6:42 | 0:59 | 7:00 | 1:20 | <0.001 |
| Total sleep time (hh:mm) | |||||||
| Baseline | 6:20 | 0:50 | 6:27 | 0:44 | 6:39 | 0:30 | 0.31 |
| Week 2 | 6:37 | 1:00 | 5:41 | 0:53 | 6:09 | 1:10 | 0.03 |
| Sleep efficiency (%) | |||||||
| Baseline | 79.3 | 10.6 | 80.8 | 9.2 | 83.2 | 6.2 | 0.31 |
| Week 2 | 82.6 | 10.4 | 85.3 | 9.4 | 88.0 | 6.5 | 0.10 |
| Sleep latency (mins) | |||||||
| Baseline | 24.2 | 26.1 | 33.2 | 15.0 | 22.1 | 19.3 | 0.63 |
| Week 2 | 15.2 | 13.3 | 10.4 | 11.2 | 8.4 | 8.4 | 0.07 |
| Wake after Sleep Onset (mins) | |||||||
| Baseline | 52.4 | 28.0 | 43.4 | 21.4 | 41.3 | 23.2 | 0.18 |
| Week 2 | 44.8 | 23.2 | 29.3 | 17.5 | 27.5 | 18.9 | 0.006 |
Note: boldface type denotes significant findings
Abbreviations
mins = minutes
6h TIB = 6 hours time in bed
8h TIB = 8 hours time in bed