If the progression of Parkinson’s disease were slowed by 50%, there would be a 35% reduction in excess costs.
Johnson, SJ, MD Diener, A Kaltenboeck, HG Binbaum, and AD Siderowf. An Economic Model of Parkinson’s Disease: Implications for slowing progression in the United States. Mov Disord. 2013; http://www.ncbi.nlm.nih.gov/pubmed/23404374