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Statistics about Williams Syndrome

Prevalence and incidence statistics for Williams Syndrome:

See also prevalence and incidence page for Williams Syndrome

Prevalance of Williams Syndrome: estimated 1 per 7,500 - 20,000 people suffer from Williams syndrome, Genetics Home Reference website

Prevalance Rate: approx 1 in 7,500 or 0.01% or 36,266 people in USA [about data]

Williams Syndrome: Rare Disease Status

Williams Syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD)...more »

About statistics:

This page presents a variety of statistics about Williams Syndrome. The term 'prevalence' of Williams Syndrome usually refers to the estimated population of people who are managing Williams Syndrome at any given time. The term 'incidence' of Williams Syndrome refers to the annual diagnosis rate, or the number of new cases of Williams Syndrome 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.

 

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