Table 1.

Recipient, donor, and kidney transplant characteristics

Characteristics, N (%) (unless otherwise specified)Categories
>30 kg (D>R)10–30 kg (D>R)<10 kg (D=R)10–30 kg (D<R)>30 kg (D<R)
n=15,002 (13.0)n=24,903 (21.6)n=35,495 (30.8)n=26,071 (22.6)n=13,653 (11.9)
Donor factors
 Donor type
  SCD10,363 (69.1)17,727 (71.2)25,256 (71.2)18,659 (71.6)10,110 (74.0)
  ECD2831 (18.9)4674 (18.8)6738 (19.0)4823 (18.5)2060 (15.1)
 DCD1808 (12.0)2502 (10.0)3501 (9.9)2589 (9.9)1483 (10.9)
 Mean age ±SD, yr42.8±12.842.2±13.741.9±14.241.7±14.440.6±14.2
 Sex (M)10,592 (70.6)16,811 (67.5)21,374 (60.2)13,466 (51.6)6153 (45.1)
 Mean height ±SD, m1.77±0.11.74±0.11.72±0.11.70±0.11.68±0.1
 Median donor weight (Q1–Q3), kg108.9 (97.5–122.5)88.2 (79.4–99.0)77.2 (69.0–87.0)70.0 (62.0–79.4)64.7 (56.7–73.0)
 Diabetes1905 (12.8)1949 (7.9)2177 (6.2)1294 (5.0)560 (4.1)
 BMI (Q1–Q3), kg/m234.7 (30.6–39.7)28.9 (25.8–32.4)25.9 (23.4–29.0)24.2 (21.8–26.9)22.8 (20.4–25.4)
Recipient factors
 Mean age ±SD, yr51.5±14.152.0±13.552.9±12.953.4±12.252.1±11.6
 Male sex6811 (45.4)12,946 (52.0)21,972 (61.9)18,327 (70.3)10,837 (79.4)
 Mean height ±SD, m1.65±0.11.67±0.11.70±0.11.73±0.11.78±0.1
 Median recipient weight (Q1–Q3), kg64.0 (54.9–74.4)69.3 (60.6–79.0)77.6 (68.9–87.1)89.3 (80.7–98.5)107.3 (97.9–117.9)
 Diabetes4026 (26.9)7293 (29.4)11,738 (33.2)9981 (38.4)5841 (42.8)
 Previous kidney transplant2433 (16.4)3735 (15.0)4531 (12.8)2851 (10.9)1281 (8.6)
 Dialysis vintage >4 yr5731 (39.0)9369 (38.4)12,816 (37.0)8973 (35.2)4813 (36.0)
 BMI (Q1–Q3), kg/m223.4 (20.8–26.6)24.7 (22.0–27.9)26.7 (24.0–30.0)29.8 (26.8–33.0)34.2 (31.0–37.4)
Surgical and immunologic factors
 Median cold ischemic time (IQR), h18.2 (12.0–23.0)17.9 (11.8–23.0)17.9 (11.6–23.0)17.8 (11.7–23.0)17.8 (11.5–22.9)
 Peak PRA <209368 (63.6)15,939 (65.2)23,987 (69.0)18,397 (72.1)10,060 (75.3)
 Peak PRA 20–803039 (20.6)4923 (20.2)6515 (18.8)4482 (17.6)2117 (15.9)
 Peak PRA >802334 (15.8)3569 (14.6)4238 (12.2)2634 (10.3)1182 (8.8)
 Induction therapy (ATG)6752 (45.0)10,849 (43.6)15,187 (42.8)10,945 (42.0)6010 (44.0)
Donor and recipient factors
 HLA mismatches
  0MM1586 (10.6)2704 (10.9)3728 (10.6)2645 (10.2)1391 (10.3)
  1MM347 (2.3)651 (2.6)849 (2.4)667 (2.6)319 (2.4)
  2MM718 (4.8)1151 (4.7)1733 (4.9)1216 (4.7)652 (4.8)
  3MM2017 (13.5)3285 (13.3)4614 (13.1)3519 (13.6)1748 (12.9)
  4MM3726 (24.9)6265 (25.3)8899 (25.3)6341 (24.5)3473 (25.6)
  5MM4379 (29.3)7090 (28.7)10,222 (29.0)7668 (29.6)3964 (29.3)
  6MM2167 (14.5)3594 (14.5)5187 (14.7)3826 (14.8)2000 (14.8)
 Absolute weight difference (Q1–Q3), kg41.7 (35.0–52.2)18.6 (14.0–23.6)0.0 (−5.0–4.9)−18.6 (−23.7–−14.1)−40 (−48.7–−34.5)
 MDMR4805 (32.0)9057 (36.4)13,948 (39.3)9880 (37.9)5068 (37.1)
 FDFR2404 (16.0)4203 (16.9)6097 (17.2)4158 (16.0)1731 (12.7)
 MDFR5787 (38.6)7754 (31.1)7426 (20.9)3586 (13.8)1085 (8.0)
 FDMR2006 (13.4)3889 (15.6)8024 (22.6)8447 (32.4)5769 (42.2)
  • Proportion missing: Recipient diabetes (0.31%); donor diabetes (0.47%); DCD (0.01%); dialysis vintage (2.15%); HLA mismatch (0.68%); peak PRA (1.66%); cold ischemic time (7.77%). D>R, donor greater than recipient; D=R, donor equal to recipient; D<R, donor less than recipient; SCD, standard criteria donor; ECD, expanded criteria donor; DCD, donation by cardiac death; M, male; Q1, quarter 1; Q3, quarter 3; BMI, body mass index; IQR, interquartile range; PRA, panel reactive antibody; ATG, antithymoglobulin; HLA, human leukocyte antigen; MM, mismatch; MDMR, male donor/male recipient; FDFR, female donor/female recipient; MDFR, male donor/female recipient; FDMR, female donor/male recipient.