Table 1.

Mean values of UPDRS motor scores (part III) in all patients before surgery (with/without medication) and at postoperative follow-up after 6, 12, and 24 months: significant differences between preoperative med on vs. med off in all groups

	Preoperative		12 months post				24 months post
	med on	med off	stim on med on	stim on med off	stim off med on	stim off med off	stim on med on	stim on med off	stim off med on	stim off med off
total	30*,#	50**,#	20*	28**	40	50	26	25**	44	54
<65	31*,#	51**,#	21*	31**	38	50	27	21**	43	53
>65	30*,#	49**,#	18*	25**	42	49	24	30**	48	56

(^#p < 0.05, Dunn's method), med on vs. 12 m stim on/med on (*p < 0.05, Dunn's method), (24 m n.s.), preoperative med off vs. 12 m and 24 m stim on/med off (**p < 0.05, Dunn's method), no significant differences among the age group's and total of patient's