Data Supplement

Three tables; three Word documents.

Files in this Data Supplement:

• E1 - Table E-1. Neuropsychological test findings (raw scores) of PD patients and healthy controls (HC); Word document.
• E2 - Table E-2. Neuropsychological tests and percentages of impaired PD patients and healthy controls (HC) on each test. Impairment was defined as a score below –2SD of age and (if possible education) norms; Word document.
• E3 - Table E-3. Demographic and clinical characteristics of cognitively intact and cognitively impaired PD patients; Word document.