Table 1.
Characteristics of National Kidney Registry Chain End and Control Transplants (Feb 2008-September 2020).
| NKR Chain End | Other NKR | Living Donor | Non-NKR KPD | Deceased Donor | |
|---|---|---|---|---|---|
| N | 749 | 3425 | 69647 | 6034 | 135847 |
| Recipient Characteristics | |||||
| Female, % | 39.3 | 47.2 | 37.2 | 42.5 | 39.2 |
| Black, % | 31.6 | 15.0 | 12.7 | 13.3 | 33.6 |
| Hispanic, % | 10.5 | 11.4 | 15.2 | 14.5 | 17.9 |
| Median (IQR) Age, years | 53.0 (41.0-60.0) | 52.0 (40.0-61.0) | 50.0 (36.0-60.0) | 50.0 (39.0-60.0) | 55.0 (43.0-63.0) |
| Preemptive Transplant, % | 16.0 | 28.1 | 35.9 | 29.9 | 10.6 |
| Median (IQR) Years on Dialysis | 3.0 (1.1-4.8) | 1.0 (0.0-2.4) | 0.5 (0.0-1.6) | 0.9 (0.0-2.3) | 3.6 (1.5-5.9) |
| Median (IQR) BMI, kg/m2 | 26.5 (23.5-31.0) | 26.8 (23.3-30.9) | 27.2 (23.6-31.4) | 27.5 (23.8-31.7) | 28.0 (24.3-32.1) |
| College Educated, % | 59.6 | 68.6 | 61.5 | 64.7 | 48.1 |
| Public Insurance, % | 70.9 | 46.4 | 42.4 | 45.5 | 77.5 |
| Diabetes, % | 27.0 | 18.5 | 21 | 21.3 | 28.8 |
| Hypertension, % | 21.5 | 14.5 | 15.7 | 15.3 | 24.2 |
| Hepatitis C, % | 2.0 | 1.5 | 2.1 | 2.0 | 5.5 |
| Previous Transplant, % | 11.3 | 23.7 | 11.2 | 16.4 | 14.0 |
| PRA>80 at Transplant, % | 6.4 | 20.9 | 3.8 | 9.7 | 16.4 |
| Median (IQR) eGFR Pre-transplant, mL/min per 1.73 m2 | 7.4 (5.2-10.6) | 8.0 (5.6-11.7) | 8.9 (6.2-12.9) | 8.3 (5.7-12.0) | 6.7 (4.9-9.5) |
| Antibody Depleting Induction, % | 64.5 | 69.0 | 63.5 | 74.0 | 73.5 |
| Delayed Graft Function, % | 7.6 | 4.2 | 3.1 | 3.7 | 27.8 |
| Donor Characteristics | |||||
| Female, % | 64.8 | 63.3 | 62.7 | 63.9 | 39.1 |
| Black, % | 7.1 | 8.5 | 10.5 | 8.4 | 13.6 |
| Hispanic, % | 9.3 | 9.7 | 14.7 | 13.1 | 14.5 |
| Median (IQR) Age, years | 52.0 (41.0-58.0) | 44.0 (34.0-53.0) | 42.0 (33.0-52.0) | 44.0 (34.0-52.0) | 41.0 (29.0-52.0) |
| Median (IQR) BMI, kg/m2 | 26.1 (23.4-28.8) | 26.1 (23.3-29.0) | 26.7 (23.9-29.8) | 26.6 (23.8-29.7) | 27.2 (23.7-31.7) |
| Median (IQR) eGFR, mL/min per 1.73 m2 | 93.1 (81.7-103.0) | 97.6 (86.0-109.0) | 98.9 (85.9-110.8) | 97.1 (84.4-109.0) | 88.6 (58.9-112.6) |
| Median (IQR) LKDPI or KDPI, % | 19.8 (5.5-35.6) | 12.4 (−1.2-26.6) | 12.7 (−1.2-27.5) | 13.6 (0.2-28.0) | 46.8 (25.5-68.6) |
| Blood Type O, % | 2.3 | 46.7 | 64.9 | 55.2 | 47.4 |
| 1 Renal Vein, % | 88.5 | 88.2 | |||
| 2 Renal Veins, % | 5.1 | 3.7 | |||
| 3 Renal Veins, % | 0.4 | 0.2 | |||
| Missing Vein Information, % | 6 | 7.9 | |||
| 1 Renal Artery, % | 70.1 | 72.4 | |||
| 2 Renal Arteries, % | 21.2 | 18.6 | |||
| 3 Renal Arteries, % | 3.1 | 1.4 | |||
| Missing Artery Information, % | 6 | 7.9 | |||
| Transplant Characteristics | |||||
| Zero HLA mismatch, % | 0.4 | 0.9 | 6.9 | 0.7 | 6.7 |
| 1 HLA mismatch, % | 0.9 | 2.0 | 4.6 | 0.9 | 1.2 |
| 2 HLA mismatch, % | 4.7 | 6.4 | 14.9 | 4.9 | 4.7 |
| 3 HLA mismatch, % | 12.4 | 16.8 | 25.3 | 13.6 | 13.8 |
| 4 HLA mismatch, % | 26.3 | 26.2 | 16.4 | 26.8 | 27.2 |
| 5 HLA mismatch, % | 36.7 | 31.1 | 20.0 | 32.7 | 31.5 |
| 6 HLA mismatch, % | 17.2 | 14.7 | 11.0 | 18.5 | 14.8 |
| Median (IQR) cold ischemia time, hours | 6.4 (1.4-9.8) | 9.3 (6.3-12.5) | 1.0 (0.7-1.9) | 1.4 (0.9-3.1) | 16.5 (11.3-22.3) |