Table I.

Subject characteristics and objective measures of freezing.

	Mean	STD	Mean	STD	Mean	STD	F-value	p-value	F-value	p-value
UPDRS III	5.9	3.9	29.2	6.9	36.9	9.0	75.0	<0.0001	-	-
PIGD	0.4	0.6	1.8	1.2	3.5	1.9	19.0	<0.0001	-	-
# of turns	28.79	9.94	25.08	5.63	15.38	8.54	10.00	<0.0001	2.70	0.08
Average peak speed	136.02	51.46	124.23	20.91	106.08	30.85	2.50	0.09	0.30	0.70
Average jerkiness	0.17	0.07	0.24	0.11	0.41	0.23	4.90	0.01	1.70	0.20
Freezing Ratio Turn	0.38	0.24	1.75	1.45	5.19	4.24	25.00	<0.0001	3.50	0.04
Freezing Ratio TUG	0.19	0.14	0.39	0.48	0.75	1.06	2.3	0.1	0.60	0.5

ANCOVA tests are corrected for UPDRS-III