Comparison of Outcomes in Unilateral STN versus Unilateral GPi DBS.

LED- levodopa equivalent dose; HAM-A- Hamilton Anxiety Inventory; HAM-D- Hamilton Depression Inventory; BDI- Beck Depression Inventory; AES- Apathy Scale; YBOCS- Yale Brown Obsessive Compulsive Scale; YMRS- Young Mania Rating Scale; UPDRS- Unified Parkinson's Disease Rating Scale Motor Section (III); Time intervals correspond to time from the DBS operation. Within group changes were tested using the signed rank test and significant results are highlighted in bold (* for p<0.05; and ** for p<0.01); while the between group comparisons were tested using the Wilcoxon rank sum test and corresponding p-values presented in the 3rd row of each block. Comparison of Outcomes in Unilateral STN versus Unilateral GPi DBS.