Prevalence and Incidence of Pendred syndrome

Prevalance of Pendred syndrome:

Pendred syndrome represents over 7% of all cases of hearing loss at birth, Genetics Home Reference website ... see also overview of Pendred syndrome.

Pendred syndrome: Rare Disease

Pendred syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Pendred syndrome, or a subtype of Pendred syndrome, affects less than 200,000 people in the US population.

Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Pendred syndrome as a "rare disease". More information about Pendred syndrome is available from Orphanet

About prevalence and incidence statistics:

The term 'prevalence' of Pendred syndrome usually refers to the estimated population of people who are managing Pendred syndrome at any given time. The term 'incidence' of Pendred syndrome refers to the annual diagnosis rate, or the number of new cases of Pendred 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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