Table 2

 Neuropsychological assessment before and 6, 24, and 60 months after neurosurgery

Before surgeryAfter surgery
6 months24 months60 months
Values are mean (SD).
*p<0.013 compared with before surgery; †p<0.013 compared with the corresponding assessment 6 months after surgery; ‡p<0.013 compared with the corresponding assessment 24 months after surgery.
UPDRS I2.3 (2.0)2.0 (1.9)2.0 (2.5)3.3 (2.2)*†‡
Mattis Scale140.2 (3.9)138.2 (9.5)132.5 (15.7)134.4 (8.7)*†
Frontal score43.2 (7.2)40.9 (8.2)39.5 (11.5)36.3 (10.8)*
MADRS10.9 (5.6)8.5 (8.3)10.7 (10.3)12.3 (11.2)