Table 2.

Dim-Light Melatonin Onset and Core Body Temperature Minimum Times (Clock Times for DLMO and Core Temperature Minimum Times and Hours for Their Corresponding Differences Δ)

	Clock time (mean ± SD)		Mean [95% CI] difference, h
Day	Standard	Circadian	circadian-standard	P
DLMO
2	22:14 ± 1:20	22:06 ± 1:15	−0.1 [−0.7 to 0.5]	.919
8	02:24 ± 3:02	06:31 ± 1:45	4.1 [2.9 to 5.4]	<.001
Δh	4.2 ± 3.0	8.2 ± 1.2	4.2 [3.0 to 5.5]	<.001
Δh/day	0.7 ± 0.5	1.4 ± 0.2	0.7 [0.5 to 0.9]	<.001
Core temperature minimum
3	06:31 ± 3:28	06:22 ± 4:14	−0.7 [−2.9 to 1.6]	.804
4	06:46 ± 2:30	08:26 ± 2:50	1.5 [0.4 to 2.6]	.036
5	07:30 ± 4:40	10:13 ± 1:54	2.7 [1.5 to 3.9]	<.001
6	07:52 ± 2:01	11:20 ± 2:39	3.3 [2.6 to 3.9]	<.001
7	08:23 ± 2:56	13:05 ± 1:44	4.5 [3.5 to 5.6]	<.001
Δh	1.8 ± 3.3	6.7 ± 4.1	5.6 [3.0 to 8.2]	<.001
Δh/day	0.4 ± 0.8	1.7 ± 1.0	1.4 [0.7 to 2.1]	<.001