Table 4.
Predictive ratios of the models
| Variables | Model 0 (ADRG) |
Model 1 (RDRG) |
Model 2 (ADRG + CCI) |
Model 3 (ADRG + NHIS-HCC) |
Model 4 (ADRG + HHS-HCC) |
|
|---|---|---|---|---|---|---|
| Sex | Female | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
| Male | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
| Age group | 0–2 | 1.000 | 1.019 | 1.000 | 1.000 | 1.000 |
| 3–19 | 1.000 | 1.105 | 1.000 | 1.000 | 1.000 | |
| 20–39 | 1.000 | 1.039 | 1.000 | 1.000 | 1.000 | |
| 40–59 | 1.000 | 1.011 | 1.000 | 1.000 | 1.000 | |
| 60 + | 1.000 | 0.976 | 1.000 | 1.000 | 1.000 | |
| Medical institution | Tertiary hospital | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
| General hospital | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
| Hospital | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
| Insurance | NIH | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
| Medical aid | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
| Actual cost | Lower 10th pct | 3.601 | 3.357 | 3.472 | 3.354 | 3.341 |
| Middle | 1.209 | 1.188 | 1.203 | 1.188 | 1.190 | |
| Upper 10th pct | 0.620 | 0.656 | 0.633 | 0.656 | 0.653 | |
ADRG Adjacent Diagnosis Related Group, CCI Charlson Comorbidity Index, HHS-HCC Department of Health and Human Service Hierarchical Condition Category, NHIS-HCC National Health Insurance Service Hierarchical Condition Category, NIH National Health Insurance, pct percentile, RDRG Refined Diagnosis Related Group