Global Assessment of Gastrointestinal Endoscopic Skills (GAGES): a valid measurement tool for technical skills in flexible endoscopy.

Surgical Endoscopy
Melina C VassiliouG M Fried

Abstract

Simulators may improve the efficiency, safety, and quality of endoscopic training. However, no objective, reliable, and valid tool exists to assess clinical endoscopic skills. Such a tool to measure the outcomes of educational strategies is a necessity. This multicenter, multidisciplinary trial aimed to develop instruments for evaluating basic flexible endoscopic skills and to demonstrate their reliability and validity. The Global Assessment of Gastrointestinal Endoscopic Skills (GAGES) Upper Endoscopy (GAGES-UE) and Colonoscopy (GAGES-C) are rating scales developed by expert endoscopists. The GAGES scale was completed by the attending endoscopist (A) and an observer (O) in self-assessment (S) during procedures to establish interrater reliability (IRR, using the intraclass correlation coefficient [ICC]) and internal consistency (IC, using Cronbach's alpha). Instrumentation was evaluated when possible and correlated with total scores. Construct and external validity were examined by comparing novice (NOV) and experienced (EXP) endoscopists (Student's t-test). Correlations were calculated for GAGES-UE and GAGES-C with participants who had performed both. For the 139 completed evaluations (60 NOV, 79 EXP), IRR (A vs. O) was 0.96 f...Continue Reading

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