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- Title
Homogeneity of the German Diagnosis-Related Groups.
- Authors
Stausberg, Jürgen; Kiefer, Emanuel
- Abstract
This study analysed the outstanding homogeneity of the German Diagnosis-Related Groups (G-DRG) using the reduction in variance (R2) of costs. Arbitrary increase in case groups, definition of additional charges and combination of several case groups in one DRG were considered as potential confounders. In 2009, the G-DRG-system offers an outstanding homogeneity with R2 of 83.5% in comparison to 2004 with R2 of 70.2%. The effect of an arbitrary increase in case groups is negligible. However, a simulation of the other confounders explains three-fourth of the increase in R2 between 2004 and 2009. The definition of additional charges attributes in particular to the outstanding homogeneity. The assessment of DRG-systems with R2 should be complemented with measures that are independent from a trimming of costs, e.g. relating actual costs with prospective payment. The G-DRGs left medical ground in order to achieve optimal economical homogeneity.
- Subjects
GERMANY; NATIONAL health services; ANALYSIS of variance; DATABASES; DIAGNOSIS related groups; HOSPITAL charges; MATHEMATICAL models; STATISTICS; HEALTH insurance reimbursement; COST analysis; PROSPECTIVE payment systems; ECONOMICS
- Publication
Health Services Management Research, 2010, Vol 23, Issue 4, p154
- ISSN
0951-4848
- Publication type
Article
- DOI
10.1258/hsmr.2010.010002