Objective: To review the Appropriateness Evaluation Protocol (AEP) with respect to assessing the necessity of hospital stay at the University Hospital of Maastricht.
Design: 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).
Setting: The University Hospital of Maastricht, a 700-bed university and regional hospital in the south of The Netherlands.
Main outcome measures: 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.
Conclusion: 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.