Enders D, et al. – This meta–analysis aimed to determine the age– and gender–specific prevalence of Parkinson's disease (PD) in Germany as well as the severity and illness duration. The clinicians provided an up–to–date estimation of age– and gender–specific as well as severity–based prevalence figures for PD in Germany. To estimate population–based severity distributions and distributions of non–motor symptoms in PD, further community studies were needed.