Prevalence and Incidence of Dementia


About prevalence and incidence statistics: The term 'prevalence' of Dementia usually refers to the estimated population of people who are managing Dementia at any given time. The term 'incidence' of Dementia refers to the annual diagnosis rate, or the number of new cases of Dementia diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Incidence (annual) of Dementia: 6,175 annual cases in Victora 1996 (DHS-VIC)
Incidence Rate: approx 1 in 738 or 0.14% or 368,320 people in USA [about data]
Last revision: July 1, 2003

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