Clinical Validation of Acer, GSSED-RE, GSSED-RE2 Scores for Prediction of Delayed Bleeding after Endoscopic Mucosal Resection of Large Colorectal Lesions

Aims Several risk factors have been proposed to predict delayed bleeding (DB) after EMR of large colon polyps. Three prediction models (ACER, GSSED-RE, GSSED-RE2) evaluated risk factors, of which GSSED-RE2 reported the highest prediction scores (AUC 0.71). We aimed to validate these three scoring systems for their accuracy to predict DB.