TABLE 2.
Characteristics of tier 1, 2, 3, 4, and 5 DSAs
| Characteristic | Tier 1 DSAs(most risk-averse) | Tier 2 DSAs | Tier 3 DSAs | Tier 4 DSAs | Tier 5 DSAs(least risk-averse) |
|---|---|---|---|---|---|
| Average annual liver donor volumea | 149.01 (126.87) | 113.98 (74.69) | 157.76 (59.90) | 157.04 (75.95) | 125.78 (106.42) |
| Pursuit rateb | 96.99% (3.11%) | 99.28% (1.07%) | 99.72% (0.21%) | 99.78% (0.37%) | 100.0% (0.00%) |
| Consent attainment rateb | 97.82% (1.35%) | 98.82% (0.91%) | 99.25% (0.60%) | 99.68% (0.46%) | 99.81% (0.25%) |
| Recovery rateb | 50.38% (11.50%) | 56.27% (8.75%) | 62.51% (7.41%) | 73.38% (6.05%) | 76.23% (9.53%) |
| Transplant rateb | 77.33% (17.28%) | 81.29% (6.57%) | 77.18% (6.87%) | 84.66% (6.05%) | 85.29% (8.77%) |
| Liver transplant centers per DSAc | |||||
| No local center | 2 (16.7%) | 1 (8.3%) | 0 (0%) | 0 (0%) | 2 (18.2%) |
| 1 local center | 2 (16.7%) | 6 (50.0%) | 3 (27.3%) | 3 (25.0%) | 2 (18.2%) |
| ≥2 local centers | 8 (66.7%) | 5 (41.7%) | 8 (72.7%) | 9 (75.0%) | 7 (63.6%) |
| Average listing center liver offer acceptance rated | 1.54% (0.44%) | 2.54% (1.07%) | 1.88% (0.65%) | 2.55% (1.20%) | 3.16% (1.53%) |
| Number of offers per livere | |||||
| All donors | 58.61 (207.59) | 33.03 (151.28) | 43.95 (154.58) | 43.63 (207.05) | 34.64 (135.63) |
| Nonideal donors | 112.55 (287.12) | 65.71 (212.70) | 83.69 (224.52) | 82.31 (288.62) | 66.34 (207.74) |
| Proportion of donors from whom a liver offer was acceptede | |||||
| All donors | 71.03% (6.33%) | 75.04% (4.57%) | 71.08% (7.02%) | 78.07% (4.43%) | 78.38% (8.69%) |
| Nonideal donors | 49.46% (14.70%) | 55.76% (7.63%) | 51.84% (9.47%) | 64.55% (5.85%) | 66.79% (12.35%) |
aOverall annual liver donor volume including both ideal and nonideal liver donors. Presented as the mean (SD) among all DSAs in each group.
bRestricted to nonideal liver donors. Presented as the mean (SD) unadjusted rate among all DSAs in each group.
cLocal liver transplant centers are defined as those within an OPO’s donation service area. Presented as the frequency (proportion) of DSAs in each group.
dIncludes only offers made to adult (age ≥ 18) isolated liver transplant candidates from both ideal and nonideal donors. Presented as the mean (SD) among all DSAs in each group.
eIncludes only offers made to adult (age ≥ 18) isolated liver transplant candidates. Presented as the mean (SD) among all DSAs in each group.
DSAs, donation service areas; OPO, organ procurement organization.