Relative ulcer size with risk of recurrent gastrointestinal bleeding Ulcer size Recurrent bleeding Total Yes: n (%) No: n (%) < 2, 0 cm 2 (66, 7%) 140 (95, 2%) 142 (94, 7%) ≥ 2, 0 cm 1 (33, 3%) 7 (4, 8%) 8 (5, 3%) Total 3 (100%) 147 (100%) 150 (100%) Comment: When the ulcer size > 2.0 cm is the factor prognosis risk of recurrent gastrointestinal bleeding with sensitivity, specificity: 33.3% and 95.2%, respectively.