Table 2.
Characteristics of unilateral and bilateral recipients (n=168,793), 2000–2015
| Characteristic | Total | Bilateral | Unilateral |
|---|---|---|---|
| N (%) | 168,793 (100.0) | 161,168 (95.5) | 7625 (4.5) |
| Recipient characteristics | |||
| Age at transplant, yr | 50±16 | 49±16 | 56±13 |
| Body mass index, kg/m2 | 27±6 | 27±6 | 28±6 |
| Men | 61 | 61 | 63 |
| Black | 30 | 30 | 35 |
| History of hypertension | 83 | 83 | 86 |
| History of diabetes | 36 | 36 | 39 |
| Previous kidney transplant | 13 | 13 | 10 |
| Panel-reactive antibody status (≥80%) | 7 | 7 | 5 |
| Transplant characteristics | |||
| No. of HLA mismatches | 3.8±1.8 | 3.8±1.8 | 4.1±1.6 |
| Zero antigen HLA mismatches | 12 | 12 | 7 |
| Organ perfused | 26 | 25 | 35 |
| Cold-ischemia time, h | 18±9 | 18±9 | 20±10 |
| Nonlocal kidney donor | 24 | 23 | 41 |
| Delayed graft function | 24 | 23 | 35 |
| Primary nonfunction | 0.5 | 0.4 | 1 |
| Death-censored graft failure | 18 | 17 | 22 |
| Death with a functioning graft | 18 | 18 | 21 |
Data are displayed as column % or mean±SD. P<0.001 for all comparisons between bilateral and unilateral recipients.