About 75% of patients presenting to the emergency room with<unk>  gastrointestinal<unk>  (UGIB) have an<unk>  source. The diagnosis is easier when the patient has hematemesis. In the absence of hematemesis, 40% to 50% of patients in the emergency room with GI<unk>  have an<unk>  source. The incidence of acute UGIB is approximately 50 to 100 per 100,000 individuals worldwide. Patients of all age groups may develop<unk>  gastrointestinal<unk> . Males are more commonly affected by UGIB than females.
Upper gastrointestinal bleeding epidemiology and demographics
Gastrointestinal varices epidemiology and demographics
Hemorrhoids epidemiology and demographics
Colon polyps epidemiology and demographics
Peptic ulcer epidemiology and demographics
Barrett's esophagus epidemiology and demographics
Stomatitis epidemiology and demographics
Carcinoid syndrome epidemiology and demographics