Biliary Atresia is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Biliary Atresia, or a subtype of Biliary Atresia, 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 Biliary Atresia as a "rare disease". More information about Biliary Atresia is available from Orphanet
16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Biliary Atresia.
Source: The 5-Minute Pediatric Consult, 2008
The term 'prevalence' of Biliary Atresia usually refers to the estimated population of people who are managing Biliary Atresia at any given time. The term 'incidence' of Biliary Atresia refers to the annual diagnosis rate, or the number of new cases of Biliary Atresia 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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