DOI: 10.6084/m9.figshare.2008209
title: Supplementary data

description: This spreadsheet holds the data used in the manuscript. The following list explains column names: (see ReadMe.doc for more information).<b>subject:</b> Each subject has a unique letter identifier<b>AnonID</b>: Anonymous ID<b>Group:</b> PD or Control<b>Category:</b> Cognitive category. PDN = PD with normal cognition, PD-MCI = PD with Mild Cognitive Impairment, PDD = PD with dementia, HC = healthy control.<b>Category_HC-MCI:</b> Cognitive category. However, this time 3 controls classified as MCI are identified (C-MCI). <b>Convert:</b> The status of each individual at 1 year follow up. HC = healthy control, Stable = Did not develop dementia, Convert = Developed dementia at 1 year. <b>Age_at_scan_years:</b> Age at assessment/scan<b>Age_base:</b> Age as study entry<b>time_btw_scans_years:</b> Time between scans measured in years.<b>Female:</b> 0 = male, 1 = female<b>Education:</b> years of education<b>FU_1year:</b> 1<sup>st</sup> or 2<sup>nd</sup> scan<b>time:</b> assessment time, either baseline (study entry) or follow up (~ 1year).<b>time.y</b>: time, in years, of follow up.<b>GM_order.diff.and.avg</b>: Subject order of the 4D files associated with grey matter (swarate_GM_44.nii.gz, swavg_GM_44.nii.gz).<b>Exclude.motion.T1:</b> T1 images excluded due to motion at Y0 or Y1.<b>TBSS_order.diff.and.avg:</b> Order of the 4D image files associated with DTI and TBSS.<b>ASL_order.diff:</b> Subject order of the 4D image file (sdiff_wecqCBF_43.nii.gz:).<b>ASL_order_avg.part1</b>: Subject order of the 4D image files (demeaned_swecqCBF_43_base_part1.nii.gz, savg_wecqCBF_43_part1.nii.gz).<b>ASL_order_avg.part2</b>: Subject order of the 4D image files (demeaned_swecqCBF_43_base_part2.nii.gz, savg_wecqCBF_43_part2.nii.gz).<b>SIENA:</b> % brain change between scans. Values only at baseline (first timepoint).<b>DTI relative motion:</b> average relative motion between adjacent diffusion volumes (see manuscript for details).<b>mean FA/MD/L1/RD:</b> mean FA /MD/L1/RD values along the white matter skeleton <b>CBF_gm:</b> mean grey matter perfusion (ml/100g/min), including cortex and subcortical grey.<b>diff.FA.Y0-Y1 (same for MD/CBF):</b> raw difference between mean FA at Y0 and Y1.<b>per.diff.FA.Y0-Y1 (same for MD/CBF):</b> percent difference between mean FA at Y0 and Y1.<b>per.diff.year.FA.Y0-Y1 (same for MD/CBF):</b> percent difference between mean FA at Y0 and Y1, divided by the time between Y0 and Y1.<b>MoCa: </b>Montreal cognitive assessment—global cognitive screen.<b>UPDRS Part 3:</b> Unified Parkinson’s disease rating scale, part 3, the motor score (only scores for PD participants).<b>LED:</b> Levodopa equivalent dose.<b>Attention Total:</b> average z score for tests in the domain of attention, working memory, and processing speed. <b>Executive Function Total:</b> average z score for tests in the domain of executive function.<b>Visuo-Total:</b> average z score for tests in the domain of visuospatial/visuoperceptual function.<b>Language all Domains:</b> average z score for tests in the domain of Language. <b>Total all Domains:</b> global cognitive score: average z score for the domain scores (attention, executive function, learning & memory, and visuospatial/perceptual)