Esophagogastric varices (EGV) were identified as the bleeding sources in 74%, gastric ulcer and duodenal ulcer each accounted for 10%, another 6% were undetermined.

• 出血原因中，74%25是食道静脉瘤破裂，胃溃疡及十二指肠溃疡出血各佔10%25。另外6%25之病患，其出血部位则无法决定。