Table 2.

Differences in sleep duration as assessed via wrist-actigraphy (mean ± SD) for the HIGH and LOW sleep groups across a 3-week data collection period.

	Sleep Duration Nightly (h:min)	Sleep Duration Week 1 (h:min)	Sleep Duration Week 2 (h:min)	Sleep Duration Week 3 (h:min)	Sleep Duration Overall (h:min)
HIGH	7:49 ± 0:15	63:42 ± 4:25	54:06 ± 1:40	54:03 ± 3:28	171:52 ± 6:40
LOW	6:55 ± 0:22	56:34 ± 5:15	48:01 ± 3:33	48:59 ± 2:41	152:36 ± 8:12
HIGH–LOW	0:54 ± 0:06 L	7:08 ± 3:42 L	6:05 ± 2:08 L	6:04 ± 2:23 L	19:16 ± 5:40 L

^L = large effect sizes. HIGH: >7.5 h average per night (n = 14), LOW: <7.5 h average per night (n = 15).