Table 2. Regression results using various measures of cost per case as a dependent variable.
| Item | Cost per case | Standardized cost per case | Standardized cost per case net of outliers | Standardized cost per case net of outliers |
|---|---|---|---|---|
| Independent variable | Coefficient | |||
| Constant | 7.54 | 7.45 | 7.43 | 7.43 |
| CMI | 1.52 | (1) | (1) | (1) |
| WI | 1.18 | (1) | (1) | (1) |
| URBAN | .099 | .223 | .176 | .139 |
| IRB | .829 | 1.09 | .841 | .646 |
| DSHVARS | (2) | (2) | (2) | (3) |
| Regression statistic | ||||
| R2 | .646 | .249 | .167 | .169 |
1
Variable is used to standardize cost per case and therefore is not included in restricted form as an independent variable.
2
Indicates variable is not included in the model.
3
These coefficients are restricted to provide each hospital receiving the adjustment with their exact payment value.
NOTES: Variable names and definitions are shown in Table 1. All nonrestricted variables are statistically significant at the 1-percent level for a two-tailed test.
SOURCE: Health Care Financing Administration, Bureau of Data Management and Strategy: Data from the Medicare Provider Analysis and Review file, Medicare Cost Reports, and the Provider-Specific file.