Table 4.

Sleep metrics derived from questionnaire

	Placebo (STD)	Dexmedetomidine (STD)	Diff (95% CI)	P value
Total sleep (mins)	521.3 (62.2)	531.6 (59.5)	−16.9 (−44.2, 10.5)	0.203
Sleep latency (mins)	36.3 (27.3)	33 (24.4)	5.9 (−10.3, 22.2)	0.435
Times awakened (n)	3.7 (3)	3.2 (2.6)	0.9 (−1.1, 3.1)	0.315
Total time awake (mins)	23 (21.3)	24 (21)	−2.5 (−12.1, 17.1)	0.719
Overall sleepiness (1-Awake, 7-Not Awake)	2.6 (1.1)	2.6 (1.2)	−0.1 (−0.8, 1)	0.826
Quality of sleep (1-Bad, 4-Excellent)	2.5 (0.8)	2.6 (0.6)	−0.3 (−0.8, 0.2)	0.230

Diff, differences in the mean of the groups.