title: Regional disparities in the annual prevalence rates of Parkinson's disease in Canada.
abstract: Parkinson's disease (PD) rates were examined by province and by sex for Canada for the years 1979-1984. As seen with other studies, PD displayed an uneven geographic distribution in the average annual prevalence rates for both males and females. The distribution of prevalence rates indicated a higher prevalence of PD in the western-most provinces. Nationally, males had a statistically significantly higher prevalence than females. Three provinces displayed a statistically significant sex difference with 2 provinces having a higher prevalence rate among males and 1 with a higher prevalence among females. The uneven distribution of prevalence rates offers some support for the involvement of environmental influences in the etiology of PD.
authors.affiliation: Department of Psychology, University of Alberta, Canada.
authors.forename: L W
authors.initials: LW
authors.lastname: Svenson
mesh_terms: D000368:Aged; D002170:Canada / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D010300:Parkinson Disease / Q000453:epidemiology* / Q000209:etiology; D012307:Risk Factors