Level I <scp>PD‐MCI</scp> Using Global Cognitive Tests and the Risk for Parkinson's Disease Dementia
Judith A. Boel, Rob M.A. de Bie, Ben Schmand, John C. Dalrymple‐Alford, Connie Marras, Charles H. Adler, Jennifer G. Goldman, Alexander I. Tröster, David J. Burn, Irene Litvan, Gert J. Geurtsen, MDS Study Group Mild Cognitive Impairment in Parkinson's Disease
Abstract
Background: The criteria for PD-MCI allow the use of global cognitive tests. Their predictive value for conversion from PD-MCI to PDD, especially compared to comprehensive neuropsychological assessment, is unknown. Methods: The MDS PD-MCI Study Group combined four datasets containing global cognitive tests as well as a comprehensive neuropsychological assessment to define PD-MCI (n = 467). Risk for developing PDD was examined using a Cox model. Global cognitive tests were compared to neuropsychological test batteries (Level I&II) in determining risk for PDD. Results: = <0.001). The C-statistics for MMSE (0.72) and MoCA (0.70) were lower than those based on neuropsychological tests (Level I = 0.82; Level II = 0.81). Sensitivity, specificity and diagnostic accuracy balance was best in Level II. Conclusion: MMSE and MoCA predict conversion to PDD. However, Level II neuropsychological assessment seems the preferred assessment for PD-MCI.