Table 2.
Descriptive statistics for sleep characteristics, stress and coping, adherence and adjustment
| Measure | N | Mean | SD |
|---|---|---|---|
| Actigraphy | |||
| TST (min) | 40 | 436.7 | 50.1 |
| SOL (min) | 40 | 14.4 | 12.1 |
| SE (%) | 40 | 85.6 | 5.2 |
| WASO (min) | 40 | 41.2 | 14.5 |
| Sleep Fragmentation Index (% + %)1 | 40 | 17.2 | 4.9 |
| Sleep variability (min) | 40 | 75.4 | 47.7 |
| Mesor, counts | 40 | 130.0 | 41.1 |
| Amplitude, counts | 40 | 115.9 | 43.2 |
| Peak time hh:mm | 40 | 3:04 PM | 1:12 PM |
| Rest Activity Quotient | 40 | 0.90 | 0.12 |
| Sleep questionnaires | |||
| Overall Sleep Quality (PSQI)2 | 32 | 6.9 | 1.5 |
| Sleepiness | 30 | 4.4 | 2.2 |
| Executive Function | |||
| DREFS | 32 | 29.8 | 3.5 |
| Trail | 39 | 13.4 | 11.4 |
| Stress and Coping | |||
| Stress (RSQ total stress) | 32 | 10.3 | 4.2 |
| Coping (RSQ total) | 34 | 104.7 | 32.5 |
| Adherence | |||
| Self-Care Inventory | 33 | 28.5 | 5.8 |
| Adjustment | |||
| Glycemic control (A1c) | 39 | 82 | 1.2 |
| Children’s Depression Inventory | 30 | 6.7 | 7.2 |
| Diabetes Quality of Life (Peds-QL) | 61.8 | 13.7 | |
| State Anxiety | 31 | 47.7 | 3.6 |
| Trait Anxiety | 32 | 32.4 | 7.6 |
1
Sleep fragmentation index (movement index + fragmentation index). It includes both restlessness and fragmentation of the sleep period.
2
PSQI: Clinical cut off for poor sleep quality is 5 or higher. Higher scores indicate poorer sleep quality.