Table 1.

Mean ± SD values for the measured sleep variables between non-dominant and dominant wrist-actigraphy devices. Comparison between devices are reported using mean bias, Pearson correlations (r), typical error of estimates (TEE) and coefficient of variation % with 95% confidence intervals.

	Non-Dominant	Dominant	Mean bias	Pearson's r	TEE	CV%
Total Sleep Time (mins)	436±72	442±80	6±19	0.97 (0.95 - 0.98)	18 (15 -22)	4.6 (3.8 - 4.7)
Total Time in Bed (mins)	552±85	554±83	2±20	0.97 (0.95 - 0.98)	20 (17 - 25)	3.8 (3.1 - 4.7)
Sleep Efficiency (%)	81±9	82±6	1±4	0.89 (0.81 - 0.94)	4 (3 - 5)	5.3 (4.4 - 6.6)
Sleep Latency (mins)	29±34	28±31	-1±15	0.89 (0.82 - 0.94)	15 (13 - 19)	102.4 (80.2 - 140.7)
Wake After Sleep Onset (mins)	53±38	52±43	-1±28	0.76 (0.61 - 0.86)	25 (21 - 32)	60.5 (47.7 - 82.5)
Sleep Onset Time (time of day)	23:25±1:32	23:24±1:33	-1±11	0.99 (0.99 - 0.99)	12 (11 - 15)	0.8 (0.7 - 1.0)
Wake Time (time of day)	7:30±1:21	7:31±1:21	1±11	1.00 (1.00 - 1.00)	11 (9 - 14)	2.5 (2.1 - 3.1)