An External Validation Study of the Oakland and Glasgow-Blatchford Scores for Predicting Adverse Outcomes of Acute Lower Gastrointestinal Bleeding in an Asian Population

Table 3

Sources of lower gastrointestinal bleeding.

Source of bleeding	(%)
Hemorrhoids	120 (29.0)
Inflammatory bowel disease	46 (11.0)
Colon adenocarcinoma	31 (7.5)
Colorectal polyps	31 (7.5)
Diverticulosis	25 (6.0)
Angioectasia	25 (6.0)
Colon ulcers	25 (6.0)
Colitis	23 (5.6)
Benign anorectal disorder (except hemorrhoids)	15 (3.6)
Small intestinal ulcers	7 (1.7)
Small bowel tumor	2 (0.5)
Duodenal pseudoaneurysm rupture	1 (0.2)
Postpolypectomy/posthemorrhoidectomy	11 (2.7)
Unknown	52 (12.6)