Table 2.

Average sleep stage transition probabilities (%) and results of paired t test. Data are displayed as mean and ±95% CI.

Sleep stage		Wake	Light	Deep	REMa
Wake
	Medical	53.7 (44.0-63.3)	43.6 (33.8-53.4)	0.2 (0.0-0.4)	2.6 (1.5-3.7)
	Fitbit	89.8 (81.2-98.3)	5.5 (4.3-6.7)	0.2 (0.0-0.5)	0.2 (0.0-0.5)
	P value	<.001	<.001	.83	<.001
Light
	Medical	2.6 (2.0-3.3)	92.6 (90.9-94.4)	3.9 (2.1-5.8)	0.8 (0.7-0.9)
	Fitbit	0.5 (0.3, 0.6)	97.8 (97.6-98.1)	1.1 (0.9-1.3)	0.5 (0.3-0.7)
	P value	<.001	<.001	.005	.02
Deep
	Medical	2.5 (0.7-4.3)	57.7 (43.8-71.6)	35.5 (22.6-48.4)	0.0 (0.0-0.0)
	Fitbit	0.2 (0-1.8)	3.8 (2.9-4.6)	94.9 (93.4-96.4)	1.1 (0.4-1.8)
	P value	.02	<.001	<.001	.002
REM
	Medical	2.0 (1.6-2.4)	0.9 (0.7-1.2)	0.0 (0.0-0.0)	96.9 (96.5-97.5)
	Fitbit	0.1 (0.0-0.2)	1.7 (0.7-2.6)	1.2 (0.3-2.2)	96.9 (96.0-98.0)
	P value	<.001	.14	.01	>.99

^aREM: rapid eye movement.