title: Can endoscopists accurately self-assess performance during simulated colonoscopic polypectomy? A prospective, cross-sectional study.
abstract: BACKGROUND
  The aim of this study was to establish if endoscopists can reliably self-assess their ability to perform simulated colonic polypectomy.
  
  
  METHODS
  Novices, intermediates, advanced, and experts performed a video-recorded polypectomy task using the Welsh Institute for Minimal Access Therapy (WIMAT) colonoscopy suitcase simulator. This involved removal of a simple polyp (A) and a complex polyp (B). Participants self-assessed themselves using a Direct Observation of Polypectomy Skills (DOPyS) assessment form. Two blinded, independent, Joint Advisory Group on Gastrointestinal Endoscopy (JAG) accredited assessors graded each performance using the same DOPyS scoring. The Spearman coefficient was used to determine the correlation between self and assessors' scores.
  
  
  RESULTS
  Eighty participants completed the task. There was a weak correlation between assessors' scores and self-assessment scores for all groups (novices: ρ = -.44, P = .85; intermediates: ρ = -.16, P = .51; advanced: ρ = .16, P = .50; and experts: ρ = .07, P = .76). There was a strong correlation between scores from assessor 1 and 2 for polyp A (ρ = .80, P ≤ .01) and polyp B (ρ = .80, P ≤ .01).
  
  
  CONCLUSIONS
  The correlation between self-assessment and assessors' scores is weak. Novices and intermediates underestimate performance, whereas advanced and experts overestimate performance. Regular feedback may improve accuracy.
authors.affiliation: Welsh Institute for Minimal Access Therapy, Cardiff CF14 4UJ, UK. Electronic address: ansellj@cf.ac.uk.
authors.forename: James
authors.initials: J
authors.lastname: Ansell
authors.affiliation: University Hospital Llandough, Cardiff, UK.
authors.forename: Joanna J
authors.initials: JJ
authors.lastname: Hurley
authors.affiliation: Welsh Institute for Minimal Access Therapy, Cardiff CF14 4UJ, UK.
authors.forename: James
authors.initials: J
authors.lastname: Horwood
authors.affiliation: Cardiff University, School of Medicine, Cardiff, UK.
authors.forename: Chantelle
authors.initials: C
authors.lastname: Rizan
authors.affiliation: Welsh Institute for Minimal Access Therapy, Cardiff CF14 4UJ, UK.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Arnaoutakis
authors.affiliation: Welsh Institute for Minimal Access Therapy, Cardiff CF14 4UJ, UK.
authors.forename: Stuart
authors.initials: S
authors.lastname: Goddard
authors.affiliation: Welsh Institute for Minimal Access Therapy, Cardiff CF14 4UJ, UK.
authors.forename: Neil
authors.initials: N
authors.lastname: Warren
authors.affiliation: University Hospital of Wales, Cardiff, UK.
authors.forename: Jared
authors.initials: J
authors.lastname: Torkington
mesh_terms: D000328:Adult; D003113:Colonoscopy / Q000193:education / Q000592:standards; D003198:Computer Simulation; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012647:Self-Assessment; D014852:Wales
keywords: Endoscopy; Polypectomy; Self-assessment; Simulation; Training