Table 3

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

Measure Best score/ worst score Preoperative (n=31) 6 months postoperative (n=31) p Value3-150 12 months postoperative (n=18) p-value3-151
UPDRS 30/10819.5  (1–78)20  (2–54)0.5425  (3–45)0.67
Tremor contralateral0/120 (0–6)0 (0–6)0.300 (0–1)0.09
Tremor ipsilateral0/120 (0–5)0 (0–5)0.230 (0–5)0.95
Akinesia contralateral0/166 (0–14)6 (0–14)0.815.5 (2–14)0.90
Akinesia ipsilateral0/164.5 (0–14)5 (0–11)0.984.5 (0–10)0.82
Rigidity contralateral0/81 (0–7)1 (0–4)0.151 (0–3)0.31
Rigidity ipsilateral0/80.5 (0–8)1 (0–4)0.960.5 (0–6)0.82
PIGD0/123 (0–11)2 (0–10)0.233 (0–12)0.02
DRS0/247.5 (0–21)2 (0–8)<0.0012.5 (0–13)0.01
DRS contralateral0/83.5 (0–8)0 (0–3)<0.0010 (0–5)<0.001
DRS ipsilateral0/82 (0–8)2 (0–5)0.371.5 (0–5)1.0
UPDRS 20/5212 (4–26)12 (4–26)0.3211 (5–21)0.94
Barthel index0/2020 (11–20)19 (12–20)0.9219.5 (7–20)0.72
SE scale100/080 (30–90)80 (50–100)0.2285 (30–90)0.26
PDQL185/37111 (61–141)88 (43–163)<0.00195.5 (48–142)0.03
  • UPDRS=Unified Parkinson's disease rating scale; PIGD=postural instabilty and gait disturbances; DRS=dyskinesia rating scale; SE scale=Schwab and England scale; PDQL=Parkinson's disease quality of life questionnaire.

  • 3-150 Data compared with preoperative data (Wilcoxon signed ranks test).

  • 3-151 Data compared with preoperative and six months postoperative data (Friedman test).