Reliability of Three Disability Scales for Detection of Independence Loss in Parkinson’s Disease

Figure 1

Receiver operating characteristic curves of (a) Hoehn and Yahr at cut-offs of >3.0 (blue) and >2.0 (green). (b) Schwab and England ADL scale at cut-offs of <80% (blue) and <90% (green). (c) Barthel index score at a cut-off of <20.

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