TABLE 2.

Actigraphic Sleep Measures for the First 4 Days, and 24 hr Before Each Behavior Assessment

	Baseline		Sleep Restriction		Statistics
	M	SD	M	SD	t	d	p
4 Days Before Assessments
Nap Lights-Off Time	13:13	0:35	13:12	0:23	0.18	0.03	.86
Nap Wake Time	14:52	0:34	14:47	0:32	0.73	0.14	.48
Night Lights-Off Time	20:08	0:24	20:04	0:23	1.28	0.16	.22
Morning Wake Time	06:39	0:22	06:42	0:26	−1.00	−0.16	.33
24 hr Time in Bed (hr)	11.5	0.6	11.7	0.5	−1.49	−0.27	.15
24 hr Sleep Duration (hr)	10.7	0.6	10.9	0.5	−0.95	−0.17	.36
24 hr Sleep Efficiency (%)	88.3	3.5	89.0	3.6	−0.77	−0.19	.45
24 hr Before Assessments
Nap Lights-Off Time	13:17	0:32	—	—	—	—	—
Nap Wake Time	14:52	0:41	—	—	—	—	—
Nights Lights-Off Time	20:07	0:28	22:34	0:30	−14.50	−5.11	<.01
Morning Wake Time	06:43	0:27	06:54	0:25	−1.47	−0.39	.16
Time in Bed (hr)	11.7	0.9	8.3	0.5	13.71	4.85	<.01
Sleep Duration (hr)	10.9	0.5	8.1	0.5	12.87	4.99	<.01
Sleep Efficiency (%)	89.5	3.2	90.1	4.0	−0.67	−0.17	.51