Skip to main content
. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Parkinsonism Relat Disord. 2017 Jul 22;46(Suppl 1):S15–S18. doi: 10.1016/j.parkreldis.2017.07.021

Figure 1.

Figure 1

Heterogeneity of motor and cognitive trajectories in two cohorts of Parkinson disease patients. Means and standard errors of the mean (SEM) for scores on the Movement Disorders Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part III in the Parkinson's Disease Progression Marker Initiative (PPMI) cohort (A), UPDRS Part III (B) and Mattis Dementia Rating Scale-2 (C) in the University of Pennsylvania Udall Center Cohort at each follow-up time point. In each graph, patient data are shown for individuals stratified by tertile (A and B) or quartile (C) of change at final time point for follow-up. While some individuals show considerable progression, others remain largely stable.