Table 6. Premium Regression Competitive Markets Defined by Residual Number of HMOs.
| Adjusted R-squared = 0.588 | ||||
|---|---|---|---|---|
| Variable | Coefficient | Standard Error | t-ratio | Probability |
| Merged Last Year | -0.0093700 | 0.03102 | -0.302 | 0.763 |
| Merged 2 years Ago | 0.026914 | 0.03573 | 0.753 | 0.451 |
| Merged 3+ Years Ago | 0.0068361 | 0.03200 | 0.214 | 0.831 |
| Will Merge | 0.024520 | 0.03016 | 0.813 | 0.416 |
| Will Exit | -0.018569 | 0.02985 | -0.622 | 0.534 |
| Will Fall | -0.024406 | 0.02287 | -1.067 | 0.286 |
| Residual*Merged 1 | 0.017803 | 0.008231 | 2.163 | 0.031 |
| Residual*Merged 2 | -0.0075332 | 0.009916 | -0.760 | 0.447 |
| Residual*Merged 3+ | -0.0095033 | 0.009201 | -1.033 | 0.302 |
| Residual*Will Merge | 0.0050908 | 0.007195 | 0.708 | 0.479 |
| Residual*Will Exit | 0.0058509 | 0.007318 | 0.799 | 0.424 |
| Residual*Fall | -0.013220 | 0.006180 | -2.139 | 0.032 |
NOTE: HMO is health maintenance organization.
SOURCE: Research by Feldman, R., Wholey, D., and Christianson, J. for this article, 1996.