Table 2.
Descriptive statistics for 24-h sleep duration, nap status from the Child Sleep Habits Questionnaire (CSHQ) for 184 participants (104 younger, 80 older), and percent correct on the source memory task for 193 participants (111 younger, 80 younger).
| All | Younger | Older | |
|---|---|---|---|
| Age mean years (SD) | 6.19 (1.52) | 5.04 (.76) | 7.68 (.78) |
| 24-h sleep duration (mins) | 450–780 | 450–780 | 480–690 |
| 24-h sleep duration mean (SD) | 609.51 (52.44) | 622.07 (55.74) | 593.19 (42.94) |
| Nap status (n) | |||
| Napper (“Usually”, “Sometimes”) | 58 (12,36) | 43 (12,31) | 5 (0,5) |
| Non-napper (“Rarely”) | 130 | 60 | 70 |
| Not reported | 6 | 1 | 5 |
| Source memory mean percent correct (SD) | 22.82% (18.45) | 14.26% (15.24) | 34.40% (15.97) |