title: Assessment of colonoscopy by use of magnetic endoscopic imaging: design and validation of an automated tool.
abstract: BACKGROUND
  Yield and safety of colonoscopy are highly dependent on operator competence. Existing tools for assessing competence is time-consuming and based on direct observation, making them prone for bias. There is a need for an easily accessible, reliable, and valid measure of endoscopic performance.
  
  
  OBJECTIVE
  The aim of this study was to develop and explore the validity of an automated, unbiased assessment tool.
  
  
  METHODS
  We tested 10 experienced endoscopists and 11 trainees in colonoscopy on a physical simulator (Kagaku Colonoscope Training Model). Participants were tested with an easy and a difficult case.
  
  
  METHODS
  Center for Clinical Education, Capital Region of Denmark.
  
  
  METHODS
  By using magnetic endoscopic imaging, we developed a colonoscopy progression score (CoPS). A pass/fail score was established by using the contrast-group method.
  
  
  RESULTS
  We found significant differences in performance between the 2 groups using the CoPS in both case scenarios (easy: P < .001, difficult: P < .01).
  
  
  CONCLUSIONS
  Small sample sizes. The heterogeneity of the experienced group resulted in a high passing score for the difficult case, which led to the failing of the less experienced in the group. The CoPS does not consider polyp detection rate, tissue damage, or patient discomfort.
  
  
  CONCLUSIONS
  We developed a score of progression in colonoscopy, based on magnetic endoscopic imaging. With the same tool, a map of progression in colonoscopy can be provided. The CoPS and map of progression in colonoscopy could, with further development, be a valuable tool in colonoscopy training, providing live feedback and aid in unbiased certification.
authors.affiliation: Department of Surgical Gastroenterology, Copenhagen University Hospital, Herlev, Denmark.
authors.forename: Nikolaj
authors.initials: N
authors.lastname: Nerup
authors.affiliation: Department of Surgical Gastroenterology, Copenhagen University, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Louise
authors.initials: L
authors.lastname: Preisler
authors.affiliation: Centre for Clinical Education (CEKU), Copenhagen University, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Morten Bo Søndergaard
authors.initials: MB
authors.lastname: Svendsen
authors.affiliation: Department of Surgical Gastroenterology, Copenhagen University, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Lars Bo
authors.initials: LB
authors.lastname: Svendsen
authors.affiliation: Centre for Clinical Education (CEKU), Copenhagen University, Rigshospitalet, Copenhagen, Denmark.
authors.forename: Lars
authors.initials: L
authors.lastname: Konge
mesh_terms: D002983:Clinical Competence; D003113:Colonoscopy / Q000193:education / Q000379:methods; D003198:Computer Simulation; D003718:Denmark; D006801:Humans; D059032:Learning Curve; D060328:Magnetic Phenomena; D008953:Models, Anatomic; D017145:Models, Educational