Table 2.

Parkinsonian features measured in the off-drug condition, with or without stimulation

ItemBefore surgery*Last visit*Percent changep Value
*Values are mean ± SD.
Speech3.0 ± 0.82.0 ± 0.8−33.30.040
Tremor
At rest8.6 ± 5.90.6 ± 1.1−93.30.0040
Postural4.3 ± 2.11.3 ± 1.1−70.00.0064
Total12.9 ± 3.01.9 ± 0.5−85.60.0039
Rigidity12.6 ± 3.54.7 ± 3.1−62.50.00075
Akinesia/bradykinesia
Finger tapping5.9 ± 1.75.4 ± 2.0−7.30.55
Hand grip5.6 ± 1.74.7 ± 1.4−15.40.32
Hand pronate/supinate5.7 ± 2.24.7 ± 1.4−17.50.33
Leg agility6.4 ± 1.35.7 ± 1.7−11.10.39
Total23.6 ± 17.720.6 ± 15.1−12.70.34
Gait3.0 ± 1.21.7 ± 0.8−42.90.030
Postural stability2.4 ± 1.11.6 ± 1.4−35.30.23