Table 3.

Statistical Measures of Epoch-by-Epoch Comparisons Between Actigraphy and Emfit^a

		Actigraphy		Total
		Sleep	Wake
Emfit	Sleep	149,657	10,681	160,338
	Wake	10,335	17,903	28,238
	Total	159,992	28,548	188,576
Sensitivity = 0.62		Specificity = 0.93	Accuracy = 0.88	Kappa = 0.55b

Notes: ^aTable entries are 1-minute epochs. ^bp-value < 0.0001.