Blind scores of the Burke–Fahn–Marsden Dystonia Rating Scale before and after surgery
| Baseline | 6 months | 12 months | |
| Eyes | 0.33 (0.2) | 0.31 (0.8) | 0.23 (0.7) |
| Mouth | 1.87 (2.54) | 0.95 (1.2) | 0.76 (0.6) |
| Speech/swallowing | 4.89 (2.23) | 4.15 (2.9) | 3.78 (2.5) |
| Neck | 5.13 (2.45) | 3.56 (2.8)* | 2.9 (2)† |
| Right arm | 8.12 (3.57) | 6.98 (1.9)* | 4.79 (2.2)† |
| Left arm | 7.45 (3.38) | 4.01 (1.7)* | 3.8 (1.8)† |
| Trunk | 9.15 (2.26) | 3.89 (2.8)* | 3.61 (3.3)† |
| Right leg | 4.72 (2.67) | 3.97 (1.9) | 2.97 (2.9)† |
| Left leg | 4.78 (2.12) | 3.18 (1.5)* | 3.14 (2.2)† |
| Total | 46.4 (21.4) | 31.0 (17.5)* | 26.1 (16.3)† |
Values are reported as means (SD).
*In each body segment for p<0.05 in comparison between baseline and 1-year follow-up.
†For p<0.05 in comparison between baseline and 1-year follow-up.