title: Quality control of the European Liver Transplant Registry: results of audit visits to the contributing centers.
abstract: BACKGROUND
  The number of registries is increasing, but few of them perform reliability audits by comparing the data contained in the database with data contained in hospital charts.
  
  
  METHODS
  The European Liver Transplant Registry (ELTR) cocoordinating committee appointed an independent team to check the reliability of data contained in ELTR. Centers were selected at random. Ten percent of each center's files were selected at random, and 25 items per file were checked during the site visits. The rates of completeness and inconsistencies and the agreement between ELTR and charts were established. We also assessed the correlation between the quality of data and the visited centers' activity.
  
  
  RESULTS
  Seven hundred thirty-four files from 21 centers have been audited between June 1998 and June 2001. The rate of ELTR completeness was 95%, and the rate of consistency between charts and ELTR was 98%. The agreement between the ELTR and charts review was very good for all conditions (kappa value < or =0.81). However, comparisons of rates between items indicated that specific items, mostly cause of death or graft failure and patient outcome, should be targeted for improvement. No significant correlation was found between the quality of data and the experience of visited centers. The mean (min-max) and median cost per audited file were EUR 60 (8-150) and EUR 44, respectively.
  
  
  CONCLUSIONS
  The results of audit visits indicate that ELTR data are reliable, and the scientific results of ELTR can be considered credible and representative of liver transplantation in Europe. The method could serve as a model for auditing a registry.
authors.affiliation: Centre Hépatobiliaire, Hôpital Paul Brousse, Villejuif, France. vincent. karam@ap.pbr-hop-paris.fr
authors.forename: Vincent
authors.initials: V
authors.lastname: Karam
authors.forename: Bridget
authors.initials: B
authors.lastname: Gunson
authors.forename: Francine
authors.initials: F
authors.lastname: Roggen
authors.forename: Luis
authors.initials: L
authors.lastname: Grande
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wannoff
authors.forename: Magda
authors.initials: M
authors.lastname: Janssen
authors.forename: Olaf
authors.initials: O
authors.lastname: Guckelberger
authors.forename: Valérie
authors.initials: V
authors.lastname: Delvart
authors.forename: Henri
authors.initials: H
authors.lastname: Bismuth
authors.forename: Krister
authors.initials: K
authors.lastname: Höckerstedt
authors.forename: Xavier
authors.initials: X
authors.lastname: Rogiers
authors.forename: René
authors.initials: R
authors.lastname: Adam
mesh_terms: D003365:Costs and Cost Analysis; D005060:Europe; D016031:Liver Transplantation / Q000191:economics / Q000592:standards* / Q000706:statistics & numerical data*; D011786:Quality Control; D012042:Registries; D012044:Regression Analysis; D015203:Reproducibility of Results; D014019:Tissue Donors / Q000706:statistics & numerical data