The risk of death in people with Parkinson’s disease is 1.6 times that of the general population.
Elbaz, Alexis, James H. Bower, Brett J. Peterson, Demetrius M. Maraganore, Shannon K. McDonnell, Eric Ahlskog, Daniel J. Schaid, and Walter A. Rocca. Survival Study of Parkinson Disease in Olmstead County, Minnesota. Arch Neurol. 2003; 60(1): 91-6. http://archneur.ama-assn.org/cgi/content/full/60/1/91