title: Assessing the necessity of hospital stay by means of the appropriateness evaluation protocol: how strong is the evidence to proceed?
abstract: OBJECTIVE
  To review the Appropriateness Evaluation Protocol (AEP) with respect to assessing the necessity of hospital stay at the University Hospital of Maastricht.
  
  
  METHODS
  Literature search in Medline focusing on the validity, reliability and possibilities for intervention plus a description and the first results of pilot studies with a Dutch version of the Adult-Medical AEP (days of stay).
  
  
  METHODS
  The University Hospital of Maastricht, a 700-bed university and regional hospital in the south of The Netherlands.
  
  
  METHODS
  Face, content, and convergent validity, and reliability in terms of overall or specific agreement and by kappa, of the Adult-Medical AEP when used by physicians and nurses.
  
  
  RESULTS
  In comparison with other instruments, a comparatively good performance by the AEP has been reported in the literature. Literature review revealed limitations in the AEP as a general and truly valid and reliable instrument for assessing the necessity of hospital stay. In applying a Dutch version (azM-AEP) similar difficulties were encountered.
  
  
  CONCLUSIONS
  Based on the literature review and our own findings, we conclude that the validity and reliability of the different versions of the AEP are not yet up to standard. Regarding the results of the interventions thus far, we do not encourage further use until additional improvements to both the instrument and the review conditions have been made. Perhaps a more disease-specific modulation and assessments based on computerized medical records could improve its applicability in clinical practice in general.
authors.affiliation: Transmural & Diagnostic Centre, University Hospital Maastricht, The Netherlands. patrick.mjh.smeets@hccnet.nl
authors.forename: P M
authors.initials: PM
authors.lastname: Smeets
authors.forename: F W
authors.initials: FW
authors.lastname: Verheggen
authors.forename: P
authors.initials: P
authors.lastname: Pop
authors.forename: L J
authors.initials: LJ
authors.lastname: Panis
authors.forename: J J
authors.initials: JJ
authors.lastname: Carpay
mesh_terms: D000328:Adult; D006300:Health Services Misuse; D006785:Hospitals, University / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D009426:Netherlands; D010343:Patient Admission / Q000592:standards*; D011785:Quality Assurance, Health Care / Q000379:methods*; D015203:Reproducibility of Results; D014600:Utilization Review / Q000379:methods*