Table 1:
Study Sample Characteristics
| Shipped Exchange | In-Center Exchange | p-valb | Other Non-Exchange | p-valb | |
|---|---|---|---|---|---|
| n=1267 | n=205 | n=4800 | |||
| Cold Ischemia Time (hours) a | 9.3 (6.9–12.2) | 1.0 (0.8–1.5) | <0.001 | 0.9 (0.5–1.0) | <0.001 |
| Recipient: Age a | 50 (39–60) | 50 (39–60) | >0.9 | 50 (41–59) | 0.6 |
| Female | 599 (47%) | 74 (36%) | <0.01 | 1557 (32%) | <0.001 |
| Diabetic | 307 (24%) | 53 (26%) | 0.6 | 1349 (28%) | <0.01 |
| Primary Diagnosis: DM | 232 (18%) | 46 (23%) | 0.07 | 1078 (22%) | <0.001 |
| GN | 412 (33%) | 60 (29%) | 1401 (29%) | ||
| PKD | 158 (12%) | 30 (15%) | 824 (17%) | ||
| Congenital | 48 (3.8%) | 1 (0.5%) | 108 (2.3%) | ||
| Other | 417 (33%) | 68 (33%) | 1389 (29%) | ||
| Years on RRT a | 1.4 (0.2–2.9) | 1.8 (0.6–3.6) | 0.048 | 0.5 (0–1.6) | <0.001 |
| Previous Transplant | 358 (28%) | 35 (17%) | 0.001 | 504 (11%) | <0.001 |
| Pre-emptive Transplant | 306 (24%) | 40 (20%) | 0.1 | 1818 (38%) | <0.001 |
| Black (vs non-black) | 211 (17%) | 50 (24%) | <0.01 | 554 (12%) | <0.001 |
| PRA at Transplant: 0 | 522 (41%) | 119 (58%) | <0.001 | 3291 (69%) | <0.001 |
| 1–10 | 67 (5.3%) | 14 (6.8%) | 327 (6.8%) | ||
| 11–79 | 347 (27%) | 39 (19%) | 661 (14%) | ||
| ≥80 | 324 (26%) | 26 (13%) | 111 (2.3%) | ||
| missing | 7 (0.6%) | 7 (3.4%) | 410 (8.5%) | ||
| BMI a | 27 (23–31) | 26 (23–31) | 0.3 | 27 (24–31) | <0.01 |
| Donor: Age a | 45 (35–52) | 48 (38–56) | <0.01 | 45 (36–53) | 0.02 |
| Female | 789 (62%) | 126 (62%) | 0.8 | 3217 (67%) | <0.01 |
| Black (vs non-black) | 137 (11%) | 24 (12%) | 0.7 | 385 (8.0%) | <0.01 |
| LD KDPI a | 12.2 (−0.84 – 25.0) | 12.0 (−0.51 – 31.3) | 0.4 | 15.2 (1.86 – 30.1) | <0.001 |
| HLA Mismatches: 0 | 9 (0.7%) | 0 | 0.08 | 17 (0.4%) | <0.001 |
| 1 | 29 (2.3%) | 3 (1.5%) | 38 (0.8%) | ||
| 2 | 81 (6.4%) | 10 (4.9%) | 207 (4.3%) | ||
| 3 | 198 (16%) | 38 (19%) | 633 (13%) | ||
| 4 | 340 (27%) | 44 (22%) | 1348 (28%) | ||
| 5 | 404 (32%) | 68 (33%) | 1620 (34%) | ||
| 6 | 182 (14%) | 41 (20%) | 907 (19%) | ||
| missing | 22 (1.7%) | 0 | 30 (0.6%) | ||
| Year of Transplanta | 2013 (2012–2014) | 2012 (2010 – 2014) | <0.001 | 2012 (2010 – 2014) | <0.001 |
a
median (IQR). CIT missing in 30 (15%) in-center exchanges, 21 (1.7%) of shipped exchanges, and none of the other non-exchanges. Recipient BMI missing in 1 (0.5%) in-center exchange, 4 (0.3%) of shipped exchanges, and 150 (3.2%) of the other non-exchanges. LD KDPI: Live-donor kidney donor profile index. LD KDPI missing in 3 in-center exchanges, 48 shipped exchanges, 242 of other non-exchanges.
b
P-values are compared to the Shipped Exchange group only.