Comparison of Outcomes of Bilateral STN versus Bilateral GPi DBS.

LED- levodopa equivalent dose; HAM-A- Hamilton Anxiety Inventory; HAM-D- Hamilton Depression Inventory; BDI- Beck Depression Inventory; AS- 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 prd row of each block.Comparison of Outcomes of Bilateral STN versus Bilateral GPi DBS.