title: Factors associated with the technical performance of colonoscopy: An EPAGE Study.
abstract: BACKGROUND
  Variations in colonoscopy practice exist, which may be related to healthcare quality.
  
  
  OBJECTIVE
  To determine factors associated with three performance indicators of colonoscopy: complete colonoscopy, adenomatous polyp diagnosis, and duration.
  
  
  METHODS
  Consecutive patients referred for colonoscopy from 21 centres in 11 countries.
  
  
  METHODS
  This prospective observational study used multiple variable regression analyses to identify determinants of the quality indicators.
  
  
  RESULTS
  Six thousand and four patients were included in the study. Patients from private, open-access centres (odds ratio: 3.17, 95% confidence interval: 1.87-5.38) were more likely to have a complete colonoscopy than patients from public, gatekeeper centres. Patients from centres where over 50% of the endoscopists were of senior rank were roughly twice as likely to have an adenoma diagnosed, and longer average withdrawal duration (odds ratio: 1.08, 95% confidence interval: 1.07-1.09) was associated with more frequent adenoma diagnoses. Patients who had difficulty during colonoscopy had longer durations to caecum (time ratio: 2.87, 95% confidence interval: 2.72-3.01) and withdrawal durations (time ratio: 1.26, 95% confidence interval: 1.18-1.33) than patients who had no difficulties.
  
  
  CONCLUSIONS
  Multiple factors have been identified as being associated with key quality indicators. The non-modifiable factors permit the identification of patients who may be at greater risk of not having quality colonoscopy, while changes to the modifiable factors may help improve the quality of colonoscopy.
authors: Institute of Social & Preventive Medicine, University of Lausanne, Rue du Bugnon 17, CH-1005 Lausanne, Switzerland.
authors: J K
authors: JK
authors: Harris
authors: F
authors: F
authors: Froehlich
authors: V
authors: V
authors: Wietlisbach
authors: B
authors: B
authors: Burnand
authors: J-J
authors: JJ
authors: Gonvers
authors: J-P
authors: JP
authors: Vader
mesh_terms: D018256:Adenomatous Polyps / Q000175:diagnosis*; D000368:Aged; D020685:Colonoscopes; D003113:Colonoscopy / Q000592:standards*; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D019984:Quality Indicators, Health Care; D013997:Time Factors