Development and prospective validation of a scoring system for the Basic Endoscopic Skills Training (BEST) box
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and Other Interventional Techniques
Development and prospective validation of a scoring system for the Basic Endoscopic Skills Training (BEST) box Ilay Habaz1 · Silvana Perretta2 · Allan Okrainec1 · Anton Svendrovski3 · Ludovica Guerriero2 · Fabio Longo2 · Pietro Mascagni2 · Ethan Weiss1 · Louis W. C. Liu4 · Lee L. Swanstrom2,5 · Eran Shlomovitz1,2,6 Received: 23 January 2020 / Accepted: 4 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Aims The increased use of endoscopy as a minimally invasive therapeutic technique has created a great demand for endoscopic training. The Basic Endoscopic Skills Training (BEST) box provides a low-cost solution by adapting the Fundamentals of Laparoscopic Surgery (FLS) box for flexible endoscopic simulation. The BEST box consists of six endoscopic tasks with a 5-min time limit per task. This study aims to develop a scoring system for objective evaluation of user performance. Methods A total of 165 participants were tested on the BEST box. Participants were divided into two groups: retrospective analysis (n = 100) and prospective analysis (n = 65). From the retrospective group, 55 individuals were also scored on the Global Assessment of Gastrointestinal Endoscopic Skills-Upper Endoscopy (GAGES-UE). Linear regression between user performance on BEST box and GAGES-UE was performed to develop the scoring system. Receiver Operating Characteristic curve was used to determine a threshold score to help users appreciate their endoscopic expertise. Prospective scoring of 65 individuals was then performed using the formula developed (20 experts and 45 trainees). Results The minimum and maximum possible scores are 30 and 110, respectively. Retrospective analysis showed that the scoring system was able to distinguish between experts and trainees (p
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