Table 5.
Results from Analysis of Hospital and Surgery Utilization
| Hospital Stays | Inpatient Surgeries | Outpatient Surgeries | ||||
|---|---|---|---|---|---|---|
| Any (Logit) | Number (Censored Poisson) | Any (Logit) | Number (Censored Poisson) | Any (Logit) | Number (Censored Poisson) | |
| Medicaid HMO market share | −1.107 | −1.520** | −0.666 | −1.081 | 0.160 | 0.419 |
| (0.859) | (0.541) | (1.521) | (1.509) | (0.995) | (0.728) | |
| Medicaid PCCM market share | −1.017 | −0.886 | −0.268 | −1.165 | 0.937 | 0.363 |
| (0.883) | (0.493) | (1.185) | (1.332) | (0.749) | (0.544) | |
| Observations | 2,602 | 2,602 | 2,602 | 2,602 | 2,602 | 2,602 |
| Predictions, holding covariates at their sample means | ||||||
| HMO market share | ||||||
| 0.30 | 0.080 | 0.093 | 0.007 | 0.006 | 0.052 | 0.053 |
| 0.40 | 0.072 | 0.080 | 0.006 | 0.005 | 0.053 | 0.056 |
| 0.50 | 0.065 | 0.068 | 0.006 | 0.004 | 0.054 | 0.058 |
| 0.60 | 0.058 | 0.059 | 0.005 | 0.004 | 0.054 | 0.061 |
| PCCM share | ||||||
| 0.30 | 0.070 | 0.081 | 0.006 | 0.005 | 0.058 | 0.056 |
| 0.40 | 0.063 | 0.074 | 0.006 | 0.004 | 0.064 | 0.058 |
| 0.50 | 0.057 | 0.068 | 0.006 | 0.004 | 0.070 | 0.061 |
| 0.60 | 0.052 | 0.062 | 0.006 | 0.003 | 0.076 | 0.063 |
Note: Standard errors are in parentheses.
p<.01. Models also include the other covariates shown in Table 4.
HMO, health maintenance organization; PCCM, primary care case management.