title: [Estimating the specificity of a University Hospital Centre. Example of the colonoscopy (EPAGE survey)].
abstract: OBJECTIVE
  The specificity of a University Hospital Centre is usually assessed from its teaching and research capacity. The EPAGE survey, an instrument used to help decision making available on the Internet, permitted us to compare the prescription of a routine exploration, gastrointestinal endoscopy, between the University Hospital Center in Clermont-Ferrand and the Hospital Centre in Moulins. The aim was to demonstrate the differences in daily practice between these two geographically close hospital centres and hence to underline the specificity of a University Hospital Centre that is not taken into account in the financing systems of such hospitals. Method The data collected were taken from the EPAGE trial, a prospective mutlicentre study that included 21 European and Canadian centres. Data was collected from the University Hospital centre in Clermont-Ferrand over two periods: from December 2000 to March 2001, then from December 2001 to February 2002, and from the Hospital Centre in Moulins, from December 2000 to the end of November 2001. For this Article, only the patients' characteristics, indications for gastrointestinal endoscopy and opportunity rate were analysed. Comparison of patients' categories from the 2 centres was conducted according to their DRG (diagnostic related group) (homogeneous patient group) classification, thus allowing calculation of the mean of the SIA (synthetic index of activity) points in the two centres.
  
  
  RESULTS
  221 cases of gastrointestinal endoscopy performed in the University Hospital centre and 292 in the Hospital Centre were included in the survey. No statistically significant difference was found in the reasons motivating a gastrointestinal endoscopy, with regard to the indications listed on the EPAGE website. There were 18% of unlisted indications in the University Hospital Centre versus 4.8% in the Hospital Centre (p<1.10-6). Using the DRG nomenclature, calculation of the mean SIA points at the University Hospital Centre per patient was of 1161 versus 1147: non significant deviation of 1.2% in favour of the University Hospital Centre.
  
  
  CONCLUSIONS
  - Conclusion The difference in reasons motivating a gastrointestinal endoscopy found between the two centres concerned rare, complex or innovating situations. This illustrates the role of a Regional Reference University Hospital Centre, an aspect clearly underestimated when measuring mixed cases according to the HPG. Study of the financing and/or information systems is warranted and might resolve the apparent underestimation of the current financing system.
authors.affiliation: Service d'épidémiologie, économie de la santé et prévention, CHU de Clermont-Ferrand (63).
authors.forename: R
authors.initials: R
authors.lastname: Letonturier
authors.forename: J
authors.initials: J
authors.lastname: Debourse
authors.forename: F
authors.initials: F
authors.lastname: Thiollière
authors.forename: R
authors.initials: R
authors.lastname: Combes
authors.forename: J-P
authors.initials: JP
authors.lastname: Vader
authors.forename: B
authors.initials: B
authors.lastname: Burnand
authors.forename: G
authors.initials: G
authors.lastname: Bommelaer
authors.forename: L
authors.initials: L
authors.lastname: Gerbaud
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D016009:Chi-Square Distribution; D003113:Colonoscopy / Q000706:statistics & numerical data / Q000639:trends*; D003627:Data Interpretation, Statistical; D003953:Diagnosis-Related Groups; D005260:Female; D005602:France; D006785:Hospitals, University / Q000191:economics / Q000639:trends*; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D015337:Multicenter Studies as Topic; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires