Table 5.

Analysis of validation experiments for the studies in the wearable and environmental categories.

Validation Parameters	Number of Subjects						Duration		Activities Considered
	1	2 to 5	6 to 10	11 to 20	>20	Not specified	<5 min	>5 min	Sitting	Standing	Lying down	Sleeping	Walking, running, moving	Motion artifacts
Number of studies	34	40	30	22	19	63	47	34	59	25	66	16	28	27