Upper gastrointestinal bleeding (UGIB) is a common cause of hospital admission worldwide, and has a mortality rate of between 2% and 15%. 1 Recent guidelines have recommended stratifying patients with UGIB into higher and lower risk categories for treatment decisions and prognostication. 1-3 The widely used scoring systems include the Glasgow-Blatchford score (GBS), Rockall score (RS), and AIMS65 score (AIMS65) (Table 1); however, their role in clinical practice remains uncertain. 4-6 Compared with other existing scores, AIMS65 is simple, easy to remember, can be calculated with nonweighted elements, and can be routinely evaluated in the emergency department. 7 These scores have been validated and compared, in terms of their accuracy in predicting various outcomes among patients presenting with UGIB, in numerous studies. 7-11 Most of the previous studies included both patients with nonvariceal

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