Table 1:

Means and standard deviations of sleep and circadian variables.

	M	SD
Sleep variables
Bedtime	19:59	0:38
Sleep start time	20:16	0:41
Midsleep time	1:35	0:42
Sleep end time	6:54	0:47
Wake time	7:07	0:44
Sleep onset latency (min)	18.0	14.5
Circadian variables
Baseline DLMO time	19:27	0:49
Final DLMO time	20:23	1:00
Phase Shift (min)	−56.1	33.6
Bedtime phase angle (min)	33.7	33.7
Sleep start phase angle (min)	51.3	31.3
Midsleep phase angle (h)	6.1	0.5
Sleep end phase angle (h)	11.4	0.6
Wake time phase angle (h)	11.6	0.6
Light exposure phase angle (min)	25.1	34.1

Note: For Baseline DLMO time, Final DLMO time, Phase Shift, and Light exposure phase angle, n = 33. For all other variables, n= 32 due to a technical issue with actigraphy for one participant. Phase angles were calculated in relation to Baseline DLMO.