Beguin C
Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium.
Methods Inf Med. 2001 Jul;40(3):241-7.
Diagnosis-related groups (DRG) were introduced in 1995 to the Belgian hospital financing system. Trimming rules are generally used when mean length of stay (LOS) is estimated by DRG. This paper proposes the use of frontier models instead of trimming rules. These models allow to take into account the characteristics of the patients, to rank hospital stays, and to indicate stays presenting discrepancy between the patient's characteristics and the resources consumed. The analysis is done with the nonparametric Free Disposal Hull (FDH) model and the method developed by Wilson to detect extreme observations, when defining the frontier is adapted to analyze large databases.
诊断相关分组（DRG）于1995年被引入比利时医院融资系统。在通过DRG估计平均住院时间（LOS）时，通常会使用修剪规则。本文建议使用前沿模型而非修剪规则。这些模型能够考虑患者的特征，对住院情况进行排名，并指出患者特征与所消耗资源之间存在差异的住院情况。当定义前沿以分析大型数据库时，使用非参数自由处置壳（FDH）模型和威尔逊开发的检测极端观测值的方法进行分析。
