title: Interobserver agreement in describing video capsule endoscopy findings: a multicentre prospective study.
abstract: OBJECTIVE
  Few studies have specifically addressed interobserver agreement in describing lesions identified during capsule endoscopy. The aim of our study is to evaluate interobserver agreement in the description of capsule endoscopy findings.
  
  
  METHODS
  Consecutive short segments of capsule endoscopy were prospectively observed by 8 investigators. Seventy-five videos were prepared by an external investigator (gold standard). The description of the findings was reported by the investigators using the same validated and standardized capsule endoscopy structured terminology. The agreement was assessed using Cohen's kappa statistic.
  
  
  RESULTS
  As concerns the ability to detect a lesion, the agreement with the gold standard was moderate (kappa 0.48), as well as the agreement relating to the final diagnosis (κ 0.45). The best agreement was observed in identifying the presence of active bleeding (κ 0.72), whereas the poorest agreement concerned the lesion size (κ 0.32). The agreement with the GS was significantly better in endoscopists with higher case/volume of capsule endoscopy per year. Diagnostic concordance was better in the presence of angiectasia than in the presence of polyps or ulcers/erosions.
  
  
  CONCLUSIONS
  Correct lesion identification and diagnosis seem more likely to occur in presence of angiectasia, and for readers with more experience in capsule endoscopy reading.
authors.affiliation: Department of Gastroenterology and Endoscopy Unit, Azienda ospedaliera-universitaria Sant'Anna, Ferrara, Italy. a.pezzoli@ospfe.it
authors.forename: Alessandro
authors.initials: A
authors.lastname: Pezzoli
authors.forename: Renato
authors.initials: R
authors.lastname: Cannizzaro
authors.forename: Marco
authors.initials: M
authors.lastname: Pennazio
authors.forename: Emanuele
authors.initials: E
authors.lastname: Rondonotti
authors.forename: Laura
authors.initials: L
authors.lastname: Zancanella
authors.forename: Nadia
authors.initials: N
authors.lastname: Fusetti
authors.forename: Marzia
authors.initials: M
authors.lastname: Simoni
authors.forename: Franco
authors.initials: F
authors.lastname: Cantoni
authors.forename: Raffaele
authors.initials: R
authors.lastname: Melina
authors.forename: Angela
authors.initials: A
authors.lastname: Alberani
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Caravelli
authors.forename: Federica
authors.initials: F
authors.lastname: Villa
authors.forename: Fausto
authors.initials: F
authors.lastname: Chilovi
authors.forename: Tino
authors.initials: T
authors.lastname: Casetti
authors.forename: Gaetano
authors.initials: G
authors.lastname: Iaquinto
authors.forename: Nicola
authors.initials: N
authors.lastname: D'imperio
authors.forename: Sergio
authors.initials: S
authors.lastname: Gullini
mesh_terms: D016888:Angiodysplasia / Q000175:diagnosis / Q000453:epidemiology; D053704:Capsule Endoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D007410:Intestinal Diseases / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology*; D007417:Intestinal Polyps / Q000175:diagnosis / Q000453:epidemiology; D007558:Italy / Q000453:epidemiology; D015588:Observer Variation; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity