title: Endoscopist characteristics that influence the quality of colonoscopy.
abstract: OBJECTIVE
  Several factors have been shown to be related to colonoscopy quality; however, little is known about the effects of endoscopist factors. This study analyzed the influence of endoscopist-related characteristics on quality indicators for colonoscopy.
  
  
  METHODS
  The study included 48 endoscopists who each performed at least 20 colonoscopies in the colonoscopy arm of a randomized controlled trial comparing fecal immunochemical test vs. colonoscopy in colorectal cancer screening. These endoscopists performed a total of 3838 procedures in the trial. The following were calculated for each endoscopist: adenoma detection rate (ADR), advanced ADR, proximal ADR, distal ADR, and adenoma per colonoscopy rate (APCR). The characteristics of endoscopists were assessed with regard to colonoscopy quality using multivariate regression analysis. Endoscopist characteristics included age, sex, exclusive endoscopy practice, years as a physician, years as a specialist, specialty, total (life-long) number of colonoscopies performed, annual colonoscopy volume, number of hours/week dedicated to endoscopy and number of educational activities in the previous year.
  
  
  RESULTS
  Factors associated with ADR were age of the endoscopist (odds ratio [OR] 1.11, 95 % confidence interval [CI] 1.01 - 1.21; P = 0.01) and life-long number of colonoscopies (OR 1.06, 95 %CI 1.01 - 1.11; P = 0.01). Only exclusive dedication to endoscopy practice was found to be independently related to proximal ADR (OR 1.71, 95 %CI 1.15 - 2.74; P = 0.001). Life-long number of colonoscopies was independently related to detection of distal adenomas (OR 1.07, 95 %CI 1.01 - 1.13; P = 0.01). None of the analyzed endoscopist characteristics was associated with advanced ADR or APCR.
  
  
  CONCLUSIONS
  This study found that the experience of the endoscopist and exclusive dedication to endoscopy practice, but not annual colonoscopy volume, were associated with better colonoscopy quality.
authors: Unidad de Gastroenterología, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria ISABIAL, Alicante, Spain.
authors: Rodrigo
authors: R
authors: Jover
authors: Unidad de Farmacología Clínica, Hospital General Universitario de Alicante, Instituto de Investigación sanitaria ISABIAL, Alicante, Spain.
authors: Pedro
authors: P
authors: Zapater
authors: Department of Gastroenterology, Hospital Donostia/Instituto Biodonostia, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Universidad del País Vasco (UPV/EHU), San Sebastián, Spain.
authors: Luis
authors: L
authors: Bujanda
authors: Department of Gastroenterology, Grupo de Investigación en Patología Digestiva, Instituto de Investigación Biomédica, Xerencia de Xestión Integrada de Vigo, Vigo, Spain.
authors: Vicent
authors: V
authors: Hernández
authors: Department of Gastroenterology, Complexo Hospitalario de Ourense, Instituto de Investigación Biomédica Ourense, Pontevedra y Vigo, Ourense, Spain.
authors: Joaquín
authors: J
authors: Cubiella
authors: Department of Gastroenterology, Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, Barcelona, Spain.
authors: Maria
authors: M
authors: Pellisé
authors: Department of Gastroenterology, Hospital Universitario La Fe, Valencia, Spain.
authors: Marta
authors: M
authors: Ponce
authors: Unidad de Gestión Clínica de Digestivo, Hospital Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria, Murcia, Spain.
authors: Akiko
authors: A
authors: Ono
authors: Department of Gastroenterology, Hospital Clínico Lozano Blesa, Universidad de Zaragoza, CIBERehd, Zaragoza, Spain.
authors: Angel
authors: A
authors: Lanas
authors: Department of Gastroenterology, Parc de Salut Mar, Hospital del Mar, Barcelona, Spain.
authors: Agustín
authors: A
authors: Seoane
authors: Department of Gastroenterology, Hospital 12 de Octubre, Madrid, Spain.
authors: José C
authors: JC
authors: Marín-Gabriel
authors: Department of Gastroenterology, Hospital de la Princesa, CIBERehd, Madrid, Spain.
authors: María
authors: M
authors: Chaparro
authors: Department of Gastroenterology, Fundación Hospital de Alcorcón, Madrid, Spain.
authors: Guillermo
authors: G
authors: Cacho
authors: Department of Gastroenterology, Hospital Puerta de Hierro, Madrid, Spain.
authors: Alberto
authors: A
authors: Herreros-de-Tejada
authors: Department of Gastroenterology, Hospital Clínico San Carlos, Madrid, Spain.
authors: Servando
authors: S
authors: Fernández-Díez
authors: Department of Gastroenterology, Consorcio Hospitalario Provincial de Castellón, Castellón de la Plana, Spain.
authors: Antonio
authors: A
authors: Peris
authors: Department of Gastroenterology, Hospital Universitario de Canarias, Instituto Universitario de Tecnologías Biomédicas (ITB) & Centro de Investigación Biomédica de Canarias (CIBICAN), Departamento de Medicina Interna, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.
authors: David
authors: D
authors: Nicolás-Pérez
authors: Unidad de Gastroenterología, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria ISABIAL, Alicante, Spain.
authors: Oscar
authors: O
authors: Murcia
authors: Department of Gastroenterology, Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, Barcelona, Spain.
authors: Antoni
authors: A
authors: Castells
authors: Department of Gastroenterology, Hospital Universitario de Canarias, Instituto Universitario de Tecnologías Biomédicas (ITB) & Centro de Investigación Biomédica de Canarias (CIBICAN), Departamento de Medicina Interna, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.
authors: Enrique
authors: E
authors: Quintero
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D002983:Clinical Competence / Q000706:statistics & numerical data*; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D003113:Colonoscopy / Q000592:standards* / Q000706:statistics & numerical data; D055088:Early Detection of Cancer / Q000379:methods / Q000592:standards* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010820:Physicians / Q000592:standards / Q000706:statistics & numerical data*; D019984:Quality Indicators, Health Care / Q000706:statistics & numerical data*; D013030:Spain