Validation of Capturing Sleep Diary Data via a Wrist-Worn Device

Table 3

Descriptive and correlations of actigraphy and electronic diary data.

	Actigraphy; mean (sd)	Electronic diary; mean (sd)	Pearson’s
SL (minutes)	29 (19)	23 (21)	.44
WASO (minutes)	66 (28)	15 (13)	.41
NWAK	52 (14)	1.8 (1.4)	−.08
TST (minutes)	398 (58)	434 (50)	.64
SE (%)	83 (6)	92 (.05)	.20

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NWAK—number of awakenings during sleep, SL—sleep latency, and WASO—waking after sleep onset.