Table 2. Freezing of gait measures during walking in virtual reality.

	Freezers (ON N = 14)			Freezers (OFF N = 7)		Freezers (ON N = 7)
	Low	High	p-value	Low	High	Low	High
Percent of Each Trial Spent Frozen	11.03 (23)	23.1 (28.7)	p = 0.005	2.09 (3.8)	81.6 (123.8)	0	51.88 (65.1)
Total Number of Freezing Episodes	88	231	p = 0.013	3	111	0	26
Average Number of Freezing Episodes per trial	1.3 (2.6)	3.3 (5.3)	p = 0.013	0.4 (0.8)	15.9 (30.2)	0	3.8 (3.4)
Average Duration of Each Freezing Episode (sec)	1.31 (4.0)	3.04 (6.8)	p = 0.14	0.58 (1.2)	7.5 (10)	0	7.91 (12.4)