title: Prospective assessment of the impact of feedback on colonoscopy performance.
abstract: BACKGROUND
  Colonoscopy is an operator-dependent procedure. The medical literature describes disparity in colonoscopy performance with respect to polyp detection, caecal intubation rates and procedural times.
  
  
  OBJECTIVE
  To assess prospectively the impact of feedback among a large cohort of colonoscopists on three performance parameters: caecal intubation rate, insertion time and withdrawal time.
  
  
  METHODS
  In a prospective clinical study, procedural data from all out-patient colonoscopies performed by attending gastroenterologists at our institution were recorded routinely in a computerized database. Enhanced serial feedback was provided on a quarterly basis for three procedure parameters: intubation to caecum, insertion time and withdrawal time. Feedback (absolute value, % rank and group distribution) was sent by email every 3 months beginning with January 2005 feedback for all of 2004, and subsequently quarterly in April 2005 (for January-March 2005), July 2005 (for April-June 2005) and October 2005 (for July-September 2005).
  
  
  RESULTS
  Feedback was provided to 58 endoscopists with a median experience level of 8 years. There was a relative decline of 19% in incomplete procedures, with median caecal non-intubation rates decreasing from 4.7% to 3.8% following the introduction of feedback while median insertion times declined from 10.6 to 9.5 mins, P = 0.02. Median withdrawal times did not change significantly, 9.1-8.9 mins, P = 0.6.
  
  
  CONCLUSIONS
  Feedback by email appears to improve colonoscopy performance, enhancing completion rates and shortening insertion times without compromising withdrawal times.
authors.affiliation: Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN 55905, USA. harewood.gavin@gmail.com
authors.forename: G C
authors.initials: GC
authors.lastname: Harewood
authors.forename: B T
authors.initials: BT
authors.lastname: Petersen
authors.forename: B J
authors.initials: BJ
authors.lastname: Ott
mesh_terms: D002983:Clinical Competence / Q000592:standards*; D003113:Colonoscopy / Q000379:methods / Q000592:standards*; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D003107:Colorectal Surgery / Q000592:standards*; D020878:Device Removal; D005246:Feedback; D006801:Humans; D007441:Intubation, Gastrointestinal; D011446:Prospective Studies; D013997:Time Factors