Table 3.
Actigraphy and Self-Reported Sleep Parameters
| Early sleep timing | Late sleep timing | P-value | |
|---|---|---|---|
| Midpoint of sleep before 03:04 am (n = 122) |
Midpoint of sleep after 03:04 am (n = 121) |
||
| Actigraphic total sleep time, min, mean (SD) | 390.8058 (51.996) | 397.5094 (64.132) | .3719 |
| Actigraphic sleep efficiency, %, mean (SD) | 81.65731 (7.291) | 80.40583 (9.184) | .2409 |
| Actigraphic sleep onset latency, min, mean (SD) | 19.73729 (15.659) | 24.01861 (24.961) | .1122 |
| Actigraphic wake after sleep onset, min, mean (SD) | 149.4696 (21.075) | 153.4047 (29.456) | .2327 |
| Actigraphic number of awakenings, n, mean (SD) | 32.65246 (12.499) | 34.74959 (12.87) | .1988 |
| Self-reported total sleep time, min, mean (SD) | 427.47408 (62.1) | 446.27718 (69.78) | .03165 |
| Self-reported sleep onset latency, min, mean (SD) | 25.52586 (23.949) | 23.94115 (19.837) | .5857 |
| Self-reported number of awakenings, n, mean (SD) | 2.126496 (1.143) | 2.086725 (1.471) | .8196 |
| Self-reported daytime minutes napping, mean (SD) | 73.785 (20.142) | 73.589 (22.125) | .7717 |
Min, minutes; SD, standard deviation.
Bold P-values are significant at <0.05.