Table 1.

List of Abbreviations

Abbreviation	Definition
BMI	Body mass index
BP	Blood pressure
GDS-15	15-item Geriatric Depression Scale
HC	Healthy controls
HVLT	Hopkins Verbal Learning Test-Revised
JOLO	Benton Judgment-of-Line-Orientation
LNS	Letter-Number Sequencing (LNS)
MCI	Mild cognitive impairment
MDS-UPDRS	Movement Disorders Society Unified Parkinson’s Disease Rating Scale
MoCA	Montreal Cognitive Assessment
mFRS	modified Framingham Risk Score
PD	Parkinson’s Disease
PPMI	Parkinson Progression Markers Initiative
SDMT	Symbol digit modality test
VRFs	Vascular risk factors
VRS	Vascular risk score
WM	White matter
WMH	White matter hyperintensities
WMHS	White matter hyperintensity score