Lower gastrointestinal bleeding epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]

Epidemiology

Prevalence

• The prevalence of lower gastrointestinal bleeding is approximately 20 per 100,000 population in the United States.

Incidence

• The estimated annual incidence of lower GI bleeding is approximately 0.03% in the adult population as a whole.

Incidence of GI bleeding per 100,000 population.
Source: wikicommens.org

Demographics

Gender

• Lower gastrointestinal bleed is more common in men than women.

Race

There is no racial predilection to lower gastrointestinal bleeding.

Age

• Rare in children
• The incidence of lower GI bleeding increases with age with a 200-fold increase from the second to eighth decades of life.

Incidence of GI bleeding based on age