Table 1. Demographic, neurological and freezing characteristics of subjects with and without freezing of gait.

		Freezers (n = 17)				Non-freezers (n = 11)
		Mean ± SD	Median	Range		Mean ± SD	Median	Range
Age		66.1±6.5	66		25	63.4±8.1	64	30
Disease duration (yr.)		7.24±3.7	7.0		25	5.55±3.1	4.0	11
LEDD		807±549	800		2400	517±427	450	1350
H & Y		1.88±0.4	2.0		1.5	1.77±0.6	2.0	1.5
UPDRS III	‘Off’	32.4±11	36		40	22.2±11	24	38
UPDRS III	‘On’	24.2±14	22		44	12.5±6.7	11	19
MMSE		27.8±2.1	28		7.0	29.3±0.6	29	2.0
BDI-II		13.9±11	14		42	7.45±6.5	4.0	18
Modal FSL	‘Off’	0.42±0.2	0.37		0.55	0.47±0.2	0.44	0.57
Modal FSL	‘On’	0.46±0.1	0.49		0.50	0.46±0.1	0.44	0.44
FOG-Q		10.2±4.5	10		15	1.30±1.4	1.0	4.0

NOTE: H & Y = Hoehn and Yahr stages, UPDRS III = motor section of the Unified Parkinson’s Disease Rating Scale, LEDD = Levodopa Equivalent Daily Dose (mg/day), MMSE = Mini Mental State Examination, BDI-II = Beck’s Depression Inventory version II, Modal FSL = Modal Footstep Latency, FOG-Q = Freezing of Gait Questionnaire.