Botz C K
Healthc Manage Forum. 1989 Spring;2(1):8-11. doi: 10.1016/S0840-4704(10)61356-7.
Resource Intensity Weights (RIWs) for Case Mix Groups (CMGs) are calculated using American Diagnosis Related Group (DRG) weights and Canadian average-length-of-stay data. However, this calculation does not actually "Canadianize" DRG weights; it only serves to randomize them. This article demonstrates the lack of the all-important relationship between RIWs and CMG costs by using simplified graphical examples. Notwithstanding the deficiencies of RIWs, the concept of weighted CMGs is fundamentally sound. Accordingly, until MIS-level reporting is widely implemented and a sufficiently large and reliable domestic database has been accumulated, it may not be entirely inappropriate for Canadian health care institutions to use unadulterated American DRGs for case mix analysis and fiscal planning.
病例组合组（CMG）的资源强度权重（RIW）是使用美国诊断相关组（DRG）权重和加拿大平均住院时长数据计算得出的。然而，这种计算实际上并没有使DRG权重“加拿大化”；它只是起到了使权重随机化的作用。本文通过简化的图表示例展示了RIW与CMG成本之间缺乏至关重要的关系。尽管RIW存在缺陷，但加权CMG的概念从根本上来说是合理的。因此，在管理信息系统（MIS）层面的报告广泛实施且积累了足够大且可靠的国内数据库之前，加拿大医疗保健机构使用未经修改的美国DRG进行病例组合分析和财务规划可能并非完全不合适。
