Superiority of a preparation‐related model for predicting inadequate bowel preparation in patients undergoing colonoscopy: A multicenter prospective study

Background and Aim Three models based on patient‐related factors have been developed to predict inadequate bowel preparation (BP). However, the performance of the models seems suboptimal. This study aimed to develop a novel preparation‐related model and compare it with the available patient‐related models. Methods Patients receiving standard BP were prospectively enrolled from five endoscopic centers. Patient‐related and preparation‐related factors for inadequate BP (defined by segmental Boston Bowel Preparation Scale score