. 2016 Aug 22;11(8):e0161188. doi: 10.1371/journal.pone.0161188

Table 4. Common etiologies of patients with obscure gastrointestinal bleeding (N = 85).

	< 30 age (N = 11)	30–65 age (N = 26)	> 65 age (N = 48)
1^st	Meckel's diverticulum (3, 17.7%)	Non-specific ulcer (7, 26.9%)	Angiodysplasia (20, 27.0%)
2^nd	Non-specific ulcer (2,11.8%)	Tumor (6, 23.1%)	Non-specific ulcer (5, 13.5%)
3^rd	Angiodysplasia (1, 5.9%), Tumor (1, 5.9%), Diverticulum (1, 5.9%)	Angiodysplasia (5, 19.2%)	Tumor (4, 5.5%), Diverticulum (4, 5.4%)

SBE: single balloon enteroscopy; OGIB: obscure gastrointestinal bleeding; IBD: inflammatory bowel disease