Identifying low-risk patients, a threshold CANUKA score of ≤ 2, the CANUKA has sensitivity of 100%, specificity of 7.14%, positive predictive value of 100%, and negative predictive value of 49.0%%. Comparison of the CANUKA with the Glasgow-Blatchford Score, the CANUKA score had a statistically significantly higher AUROC for predicting the combined poor outcome (AUROC=0.855 vs AUROC= 0.831; p=0.003).