Table 2

Mean±SD of Unified Parkinson’s Disease Rating Scale scores at 6 months in medical and surgical groups, respectively

Off-medicationOn-medication
Medical group37.2±12.221.8±13.4
Surgical group
 Off-stimulation35.4±10.320.3±81.6
 On-stimulation19.5±7.818.5±12.4

  • P values:

  • Medical group off-medication vs surgical group off-medication on-stimulation P=0.001.

  • Medical group on-medication vs surgical group on-medication on-stimulation: P=NS.

  • Within medical group: off-medication vs on-medication: P=0.001.

  • Within surgical group: off-medication off-stimulation vs off-medication–on-stimulation: P=0.001.