Table 3.
Adjusted1 hierarchical additive hazards model for the association of center-level characteristics and survival, stratified by recipient race, 2010 - 2017.
| Center-Level Characteristics | Within-White Survival Difference per 100,000 PY | Within-Black Survival Difference per 100,000 PY | Within-White Hazard Ratio | Within-Black Hazard Ratio |
|---|---|---|---|---|
| Transplant volume | ||||
| Low | 0.81 (−0.61, 2.23) | −0.36 (−4.47, 3.76) | 1.06 (0.94, 1.19) | 0.96 (0.75, 1.24) |
| Medium | −0.36 (−1.19, 0.46) | −2.65 (−5.24, −0.06) | 0.98 (0.90, 1.06) | 0.83 (0.71, 1.00) |
| High (Ref) | Ref | Ref | Ref | Ref |
| Proportion of minority patients at center (N, %) | ||||
| Low (Ref) | Ref | Ref | Ref | Ref |
| Medium | −0.05 (−0.92, 0.82) | −0.89 (−5.85, 4.07) | 1.00 (0.93, 1.08) | 0.95 (0.66, 1.37) |
| High | 0.12 (−0.89, 1.13) | −0.34 (−5.12, 4.44) | 1.01 (0.93, 1.10) | 0.98 (0.69, 1.37) |
| SRTR tier (N, %) | ||||
| 1 | 0.47 (−1.14, 2.07) | 2.54 (−2.61, 7.69) | 1.04 (0.91, 1.18) | 1.14 (0.87, 1.49) |
| 2 | 0.80 (−0.38, 1.98) | 2.63 (−1.21, 6.47) | 1.06 (0.95, 1.18) | 1.15 (0.86, 1.54) |
| 3 | 0.47 (−0.56, 1.71) | 0.50 (−3.21, 4.20) | 1.04 (0.95, 1.15) | 1.02 (0.80, 1.30) |
| 4 | 0.42 (−0.71, 1.54) | −0.44 (−4.30, 3.42) | 1.03 (0.93, 1.14) | 0.95 (0.72, 1.26) |
| 5 (Ref) | Ref | Ref | Ref | Ref |
| Geographic region (N, %) | ||||
| Northeast (Ref) | Ref | Ref | Ref | Ref |
| Midwest | −0.27 (−1.45, 0.90) | −1.59 (−5.31, 2.13) | 0.98 (0.88, 1.08) | 0.91 (0.75, 1.11) |
| South | −0.68 (−1.75, 0.38) | −1.24 (−4.28, 1.80) | 0.95 (0.86, 1.04) | 0.97 (0.80, 1.17) |
| West | −1.91 (−3.23, −0.59) | −3.64 (−8.46, 1.18) | 0.87 (0.75, 1.01) | 0.82 (0.68, 0.98) |
1
Adjusted for age, year of transplant, sex, MELD at transplant, underlying cause of disease, recipient medical condition at transplant, body mass index (BMI), donor risk index (DRI), portal vein thrombosis (PVT), history of diabetes, dialysis at transplant, educational attainment, zip-code income, primary payer, and center-level characteristics.