Data Supplement

Three tables; three Word documents.

Files in this Data Supplement:

• E1 - Table (E) T-1. Comparison of patients with Parkinson disease and age-matched controls (Wilcoxon Rank Sum test). ↑ = higher score better, ↓ = lower score better; Word document.
• E2 - Table (E)T-2. Spearman correlation coefficients between visual and cognitive test scores within the PD group (n=76). Significant values in bold, (*) denotes P<0.05, † denotes P<0.01; Word document.
• E3 - Table (E)T-3. Spearman correlation coefficients between motor, visual, and cognitive test scores within the PD group (n=76); Word document.