The relationship between incidence and prevalence.
D000328:Adult; D000368:Aged; D002561:Cerebrovascular Disorders / Q000453:epidemiology; D003430:Cross-Sectional Studies; D004812:Epidemiologic Methods; D006801:Humans; D008433:Mathematics; D008875:Middle Aged; D008962:Models, Theoretical; D009017:Morbidity; D014481:United States