What is the prevalence of Crohn disease in the US?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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In 1998, the prevalence of Crohn disease in the United States was estimated on the basis of data from Olmstead County, Minnesota, and was approximated at 8 cases per 100,000 population. [31] A subsequent analysis of a geographically diverse health insurance claims database estimated the prevalence of Crohn disease among US children and adults in 2003-2004 to be closer to 201 cases per 100,000 persons among adults and 43 per 100,000 among children. [32]

Urban areas may have a higher prevalence of IBD than rural areas do. [1, 2] Upper socioeconomic classes are thought to have a higher prevalence than lower socioeconomic classes, a difference that is likely influenced by increased access to health care, though genetic and environmental factors may also play a role. [1, 6]

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