Table 3.
MAPE (Mean absolute prediction error) expressed as a percentage of the average cost of different models based on case-mix systems, using different regression models
| |
|
Linear regression (OLS) |
Two-part |
Hierarchical models |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ACG-PM | CRG | DCG-HCC | ACG-PM | CRG | DCG-HCC | ACG-PM | CRG | DCG-HCC | ||
| Recalibration |
Variables |
|
|
|
|
|
|
|
|
|
| |
Age and Sex (A&S) |
|
106.80% |
|
|
109.09% |
|
|
106.52% |
|
| |
A&S + Only Dx |
92.36% |
96.36% |
91.26% |
114.59% |
104.74% |
109.74% |
95.27% |
95.97% |
91.52% |
| |
A&S + Only Rx |
93.57% |
|
91.87% |
113.84% |
|
115.74% |
93.74% |
|
91.98% |
| |
A&S + Dx + Rx |
88.41% |
|
87.02% |
114.96% |
|
114.44% |
89.87% |
|
87.26% |
| |
A&S + Dx + Rx + cost percentile |
85.99% |
87.70% |
85.05% |
98.52% |
96.11% |
97.92% |
86.97% |
87.72% |
85.37% |
| A&S + Dx + Rx + cost percentile + DI | 86.02% | 87.70% | 85.06% | 98.49% | 96.09% | 97.89% | 86.97% | 87.72% | 85.37% | |
Dx diagnoses, Rx prescriptions, DI Deprivation index.