Table 3.

Clinical outcomes of bilateral pallidotomy.

		Number of affected patients	Before surgery	Last follow‐up	% Improvement	p *
BFMDRS	Total	20	14.6 ± 10.2	3.8 ± 8.2	74.00%	<0.0001
	Right side
	Arm	4	11.3 ± 3.6	0.7 ± 1.2	93.80%	0.068
	Leg	0	–	–
	Left side
	Arm	4	8 ± 1.4	2.3 ± 4.5	71.30%	0.109
	Leg	1	12	0	100%	0.317
	Midline
	Eyes	8	6.3 ± 1.3	3.3 ± 3.4	47.60%	0.026
	Mouth	6	4.3 ± 2.0	2.4 ± 3.3	44.20%	0.039
	Speech/swallow	7	4.0 ± 1.6	1.2 ± 1.6	70.00%	0.026
	Neck	16	5.2 ± 2.0	0.9 ± 1.7	73.10%	<0.001
	Trunk	4	5.0 ± 2.6	1.5 ± 3	70.00%	0.109
Follow‐up period (month)	23.6 ± 12.2
Interval between staged surgeries (month)	8.2 ± 3.8

Data are presented as mean ± standard deviation.

BFMDRS, Burke‐Fahn‐Marsden Dyatonia Rating Scale.

^*Wilcoxon signed‐rank test.