• Catharine M Walsh, Simon C Ling, Petar Mamula, Jenifer R Lightdale, Thomas D Walters, Jeffrey J Yu, and Heather Carnahan.
• *Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, University of Toronto, Ontario, Canada †Division of Gastroenterology, Hepatology and Nutrition, The Children's Hospital of Philadelphia, PA ‡Department of Pediatrics, Division of Pediatric Gastroenterology and Nutrition, UMass Memorial Children's Medical Center, University of Massachusetts, Worcester, MA §Wilson Centre, Faculty of Medicine, University of Toronto, Ontario ||School of Human Kinetics and Recreation, Memorial University of Newfoundland, St John's, Newfoundland, Canada.
• J. Pediatr. Gastroenterol. Nutr. 2015 Apr 1;60(4):474-80.

ObjectivesValidated assessment tools are required to support competency-based education. We aimed to assess the reliability and validity of the Gastrointestinal Endoscopy Competency Assessment Tool for Pediatric Colonoscopy (GiECATKIDS), an instrument developed by 41 North American experts using Delphi methodology.MethodsGiECATKIDS consists of a 7-item global rating scale (GRS) and an 18-item checklist (CL). An attending physician assessed 104 colonoscopies performed at 3 North American hospitals by 56 endoscopists, including 25 novices (<50 previous procedures), 21 intermediates (50-250), and 10 advanced endoscopists (>500). Another observer rated procedures to assess interrater reliability using intraclass correlation coefficient (ICC). Test-retest reliability was measured with ICC comparing endoscopists' first and second procedure scores. Discriminative validity was examined by comparing experience level with scores. Concurrent validity was assessed by correlating scores with colonoscopy experience, cecal and terminal ileal intubation rates, and physician global assessment.ResultsInterrater reliability of the GiECATKIDS was high (total: ICC = 0.88; GRS: ICC = 0.79; CL: ICC = 0.89). Test-retest reliability was excellent (total: ICC = 0.94; GRS: ICC = 0.94; CL: ICC = 0.84). GiECATKIDS total, GRS, and CL scores differed significantly among novice, intermediate, and advanced endoscopists (P < 0.001). There was a significant positive correlation (P < 0.001) between scores and number of previous colonoscopies (total: ρ = 0.91, GRS: ρ = 0.92, CL: ρ = 0.84), cecal intubation rate (total: ρ = 0.82, GRS: ρ = 0.85, CL: ρ = 0.77), ileal intubation rate (total: ρ = 0.82, GRS: ρ = 0.82, CL: ρ = 0.80), and physician global assessment (total: ρ = 0.95, GRS: ρ = 0.94, CL: ρ = 0.89).ConclusionsThe GiECATKIDS demonstrates strong reliability and validity as a measure of performance of pediatric colonoscopy that can be used to support training and assessment.

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