Skip to main content
. Author manuscript; available in PMC: 2015 Oct 24.
Published in final edited form as: Lancet Neurol. 2010 Jan 8;9(2):149–158. doi: 10.1016/S1474-4422(10)70002-8

Figure 3. Predicted disease probability for differential diagnosis of parkinsonism.

Figure 3

Frequency distributions (left) for idiopathic Parkinson’s disease and atypical parkinsonian syndrome (A), multiple system atrophy (B), and progressive supranuclear palsy (C). The probability of atypical parkinsonian syndrome is the inverse of the probability of idiopathic Parkinson’s disease. ROC curves for each classification (right). *Inflection points on ROC curves chosen to identify the optimum cut-off probabilities for classification (vertical dashed lines).