What is the prevalence of colitis in the US?

Updated: Jan 04, 2019
  • Author: David A Piccoli, MD; Chief Editor: Carmen Cuffari, MD  more...
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Approximately 25% of cases of IBD occur during childhood and adolescence. [6] The risk of IBD in family members of an affected individual is 5-30%; children born to a parent with IBD develop IBD approximately 6-9% of the time, and, in the rare instance that both parents have IBD, studies estimate that their children have a 33% chance of developing IBD by age 28 years. [7]

The prevalence of CD and UC in the United States is estimated to be 400 per 100,000 persons. NEC affects 1-5% of patients admitting to neonatal intensive care units (ICUs). NEC may occur in 2-5% of infants with birth weights lower than 1500 g and up to 10% of infants with birth weights lower than 1000 g. In the United States, the prevalence of amebiasis in high-risk groups is reported to be 1-4%.

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