Table 3.
Comparison of Predicted Probabilities and Disparity Changes Regressing Access and Utilization Measures on Two Different Medicaid Managed Care Measures (n =3,286)*
| White (%) | Black (%) | Disparity (%) | Hispanic (%) | Disparity (%) | |
|---|---|---|---|---|---|
| Medicaid managed care enrollment | |||||
| Any doctor visit in last year | |||||
| Enrolled in Medicaid FFS | 86.3 (1.5) | 82.5 (1.4) | 3.8 (1.3)† | 81.5 (2.1) | 4.8 (1.8)† |
| Enrolled in Medicaid MMC | 89.4 (1.1) | 88.0 (0.8) | 1.4 (1.4) | 83.2 (1.0) | 6.2 (1.5)† |
| Δ Disparity | 2.4 (0.9) | −1.4 (1.2) | |||
| Have a usual source of care | |||||
| Enrolled in Medicaid FFS | 89.8 (1.2) | 87.7 (0.9) | 2.0 (1.3) | 86.4 (1.4) | 3.4 (1.4)† |
| Enrolled in Medicaid MMC | 91.1 (0.8) | 93.1 (0.7) | −2.0 (1.0)† | 92.3 (0.7) | −1.2 (1.1) |
| Δ Disparity | 4.1 (0.9) | 4.6 (1.1) | |||
| Any ER use in last year | |||||
| Enrolled in Medicaid FFS | 36.4 (2.2) | 38.2 (2.2) | −1.7 (2.0) | 31.3 (1.9) | 5.2 (1.9)† |
| Enrolled in Medicaid MMC | 38.1 (1.8) | 43.5 (1.5) | −5.5 (2.3)† | 32.1 (1.5) | 5.9 (2.4)† |
| Δ Disparity | 3.7 (1.2) | −0.7 (1.8) | |||
| % Medicaid HMO market share in MSA | |||||
| Any doctor visit in last year | |||||
| Low HMO penetration | 89.5 (2.1) | 83.9 (1.8) | 5.6 (2.0)† | 80.6 (1.9) | 8.9 (2.3)† |
| High MHMO penetration | 87.8 (1.1) | 87.6 (1.0) | 0.2 (1.4) | 84.7 (1.2) | 3.1 (1.3)† |
| Δ Disparity | 5.4 (2.1) | 5.8 (2.3) | |||
| Have a usual source of care | |||||
| Low HMO penetration | 88.7 (1.7) | 88.9 (1.3) | −0.2 (2.0) | 88.9 (1.2) | −0.2 (1.9) |
| High MHMO penetration | 91.7 (1.1) | 92.2 (1.2) | −0.6 (1.2) | 89.3 (1.7) | 2.3 (1.8) |
| Δ Disparity | 0.4 (2.2) | −2.5 (2.7) | |||
| Any ER use in last year | |||||
| Low HMO penetration | 35.7 (2.9) | 37.6 (2.2) | −1.9 (3.0) | 29.6 (1.5) | 6.0 (3.0)† |
| High MHMO penetration | 39.4 (2.6) | 43.7 (2.2) | −4.4 (2.3)‡ | 33.5 (2.1) | 5.9 (2.5)† |
| Δ Disparity | 2.5 (3.8) | 0.2 (4.3) | |||
*
Standard errors are calculated using bootstrap methodology that takes into account sampling weights and stratification used in the NHIS.
†
Significant difference within MHMO penetration category at 5% level.
‡
Marginally significant difference within MHMO penetration category (p<.058).
Numbers in bold represent a significant difference-in-difference at 5% level.
FFS, fee for service; MMC, Medicaid Managed Care; MHMO, Medicaid Health Maintenance Organization; HMO, health maintenance organization; NHIS, National Health Interview Survey; ER, emergency room.