FIGURE 1.

(a) Numbers of patients with progressive supranuclear palsy (PSP), multiple system atrophy (MSA), corticobasal syndrome (CBS) and indeterminate atypical parkinsonism (APS) exhibiting levels of impairment on MDS‐UPDRS‐II question 2.3 (chewing/swallowing) at baseline. (b) Progression of dysphagia across study population as measured by percentage exhibiting levels of impairment on MDS‐UPDRS‐II question 2.3. (c) Progression of dysphagia in MSA patients as measured by UMSARS‐I dysphagia question. (d) Progression of dysphagia in PSP as measured by PSPRS dysphagia question. MDS‐UPDRS, Movement Disorder Society‐Unified Parkinson's Disease Rating Scale.