Table 2

Median (range) scores on clinical outcome scales in standardised off phase

Measure Best score/worst score Preoperative (n=30) 6 months postoperative (n=30) p Value2-150 12 months postoperative (n=17) p-value2-151
UPDRS 30/10849  (19–91)36.5  (11–66)<0.00137  (17–71)<0.001
Tremor contralateral0/124 (0–9)0 (0–8)<0.0010 (0–3)0.001
Tremor ipsilateral0/121 (0–7)0 (0–9)0.162 (0–7)0.06
Akinesia contralateral0/1612 (4–16)7 (0–14)<0.0017 (2–16)0.001
Akinesia ipsilateral0/169 (0–15)8 (1–15)0.027 (2–16)0.15
Rigidity contralateral0/84 (1–8)2 (0–7)<0.0012 (0–5)<0.001
Rigidity ipsilateral0/82 (1–8)2 (0–8)0.062 (0–4)0.24
PIGD0/126.5 (0–12)5 (0–12)0.0025 (1–12)0.03
UPDRS 20/5230 (11–46)23.5 (8–42)<0.00123 (14–42)0.04
Barthel index20/010 (4–20)15 (4–20)<0.00117 (4–20)0.02
SE scale100/030 (10–80)60 (20–90)<0.00150 (10–90)0.01

  • UPDRS=Unified Parkinson's disease rating scale; PIGD=postural instabilty and gait disturbances; SE scale=Schwab and England scale.

  • ↵2-150 Data compared with preoperative data (Wilcoxon signed ranks test).

  • ↵2-151 Data compared with preoperative and 6 months postoperative data (Friedman test).