TABLE 3.

Relationships of FOG severity with motor and non-motor symptoms.

Symptom or symptom scale	FOG score (severity)
	Correlation coefficient	P
UMSARS I	0.388	<0.001
UMSARS II	0.350	<0.001
Total UMSARS	0.403	<0.001
UMSARS IV	0.284	<0.001
HAMA	0.255	<0.001
HAMD	0.292	<0.001
ADL	0.480	<0.001
Falling	0.200	0.004
Gait	0.270	<0.001
Speech	0.155	0.028
Balance	0.152	0.030

ADL, activities of daily living; FOG, freezing of gait; HAMD, Hamilton Depression Rating Scale; HAMA, Hamilton Anxiety Rating Scale; UMSARS, Unified MSA Rating Scale; UMSARS I, part I (historical review); UMSARS II, part II (motor examination scale); UMSARS IV, part IV (global disability scale); total UMSARS, part I + II.