Table 1.

Characteristics of patients before surgery (n = 24)

CharacteristicsMean ± SD
Age at surgery, y55.7 ± 7.3
Age at onset of PD, y39.4 ± 7.7
Duration of PD, y16.3 ± 5.4
Duration of levodopa therapy, y14.4 ± 5.9
Levodopa daily dose, mg952 ± 509
Levodopa equivalent daily dose, mg1265 ± 540
Hoehn & Yahr stage (0 to 5)
“Off” condition4.5 ± 0.5
“On” condition2.5 ± 0.3
Schwab & England scale, %
“Off” condition33 ± 16
“On” condition81 ± 7