title: Development of explicit criteria for cholecystectomy.
abstract: OBJECTIVE
  Consensus development techniques were used in the late 1980s to create explicit criteria for the appropriateness of cholecystectomy. New diagnostic and treatment techniques have been developed in the last decade, so an updated appropriateness of indications tool was developed for cholecystectomy in patients with non-malignant diseases. The validity and reliability of panel results using this tool were tested.
  
  
  METHODS
  Criteria were developed using a modified Delphi panel judgement process. The level of agreement between the panelists (six gastroenterologists and six surgeons) was analysed and the ratings were compared with those of a second different panel using weighted kappa statistics.
  
  
  RESULTS
  The results of the main panel were presented as a decision tree. Of the 210 scenarios evaluated by the main panel in the second round, 51% were found appropriate, 26% uncertain, and 23% inappropriate. Agreement was achieved in 54% of the scenarios and disagreement in 3%. Although the gastroenterologists tended to score fewer scenarios as appropriate, as a group they did not differ from the surgeons. Comparison of the ratings of the main panel with those of a second panel resulted in a weighted kappa statistic of 0.75.
  
  
  CONCLUSIONS
  The parameters tested showed acceptable validity and reliability results for an evaluation tool. These results support the use of this algorithm as a screening tool for assessing the appropriateness of cholecystectomy.
authors.affiliation: Unidad de Investigación, Hospital de Galdakao, Galdakao, Vizcaya, Spain. jmquinta@hgda.osakidetza.net
authors.forename: J M
authors.initials: JM
authors.lastname: Quintana
authors.forename: J
authors.initials: J
authors.lastname: Cabriada
authors.forename: I  López
authors.initials: I
authors.lastname: de Tejada
authors.forename: M
authors.initials: M
authors.lastname: Varona
authors.forename: V
authors.initials: V
authors.lastname: Oribe
authors.forename: B
authors.initials: B
authors.lastname: Barrios
authors.forename: I
authors.initials: I
authors.lastname: Aróstegui
authors.forename: A
authors.initials: A
authors.lastname: Bilbao
mesh_terms: D000367:Age Factors; D000368:Aged; D000465:Algorithms; D002763:Cholecystectomy / Q000592:standards* / Q000706:statistics & numerical data; D002769:Cholelithiasis / Q000601:surgery; D032921:Consensus; D003657:Decision Making; D003663:Decision Trees; D006302:Health Services Research; D006801:Humans; D008875:Middle Aged; D017410:Practice Guidelines as Topic; D013030:Spain