Table 4. Association between independent variables and the proportion of in-home dialysis patients.
| Predictors | Zero-order correlations | Standardized regression coefficients | |
|---|---|---|---|
|
| |||
| Model without region | Model with region | ||
| Population density | −.01 | −.19 | *−.18 |
| Income | *.13 | .03 | .01 |
| Physician-specialist | **.31 | **.52 | **.52 |
| Population growth | −.06 | .07 | .01 |
| Medicare reimbursement per enrollee | −.01 | **−.17 | **−.18 |
| For-profit market share | **−.22 | **−.21 | **−.20 |
| Midwest | — | — | *.14 |
| South | — | — | .14 |
| West | — | — | **.17 |
| R2 | — | .22 | .24 |
*
Statistically significant at the p < .05 level.
**
Statistically significant at the p < .01 level.
NOTE: R2 is percent of variance explained.
SOURCE: Cleary, P.D., Harvard Medical School; Schlesinger, M., John F. Kennedy School of Government; Blumenthal, D., Massachusetts General Hospital.