Statistical analysis and mapping of the Unified Parkinson's Disease Rating Scale to Hoehn and Yahr staging.

* Asterisk denotes corresponding author. Affiliations: 1 Systems Analysis, Modelling and Prediction (SAMP), Department of Engineering Science, University of Oxford, Oxford, UK 2 Oxford Centre for Industrial and Applied Mathematics (OCIAM), University of Oxford, Oxford, UK 3 Media Lab, Massachusetts Institute of Technology, Cambridge, MA, USA 4 Smith School of Enterprise and the Environment, University of Oxford, Oxford, UK 5 Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, USA 6 Sierra-Pacific Mental Illness Research, Education, and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA 7 Department of Neurology, Miller School of Medicine, University of Miami, USA