Table 3

Changes in the UPDRS motor scores and dyskinesia scores

Parameter		% of Prepal scores at				p Values
Parameter		2 y	3 y			Prepal v 2 y	Prepal v 3 y	2 y v 3 y
Dyskinesias (on):
CL	16	19		0.001	0.003	NS
IPS	88	99		NS	NS	NS
AX	67	67		NS	NS	NS
TOT	61	78		0.017	NS	NS
Resting tremor (off):
CL	13	38		0.003	0.019	NS
IPS	69	109		NS	NS	NS
Limb brady (off):
CL	91	117		NS	NS	0.015
IPS	105	144		NS	0.001	0.001
Limb brady (on):
CL	98	113		NS	NS	NS
IPS	115	140		NS	0.026	NS
Modified Hoehn and Yahr stage (off)	108	120		NS	NS	NS

Prepal=Prepallidotomy; CL=contralateral; IPS=ipsilateral; AX=axial; TOT=total; brady=bradykinesia. Increases in percentage imply worsening.
p Values apply to the mean values of measurements, and are adjusted for multiple comparisons (see Methods).