Table 1.

Characteristics of living kidney donors between 1999–2004 and 2005–2010 in each income quintile

Characteristic1999–20042005–2010P Value
Q1 (n=11,100 living donors)a
 Mean age±SD (yr)38±1139±11<0.001
 Women (%)58580.75
 Race (%)<0.001
  White5152
  Black2622
  Other2326
 Donor relation (%)<0.001
  Related7664
  Spousal1012
  Unrelated1424
Q2 (n=12,655 living donors)
 Mean age±SD (yr)39±1140±11<0.001
 Women (%)59600.10
 Race (%)<0.001
  White7270
  Black1514
  Other1316
 Donor relation (%)<0.001
  Related7259
  Spousal1113
  Unrelated1728
Q3 (n=14,390 living donors)
 Mean age±SD (yr)39±1140±11<0.001
 Women (%)59600.02
 Race (%)<0.001
  White7373
  Black1312
  Other1415
 Donor relation (%)<0.001
  Related7060
  Spousal1112
  Unrelated1928
Q4 (n=16,353 living donors)
 Mean age±SD (yr)40±1041±11<0.001
 Women (%)59610.08
 Race (%)<0.001
  White7674
  Black1111
  Other1315
 Donor relation (%)<0.001
  Related6958
  Spousal1213
  Unrelated1929
Q5 (n=17,384 living donors)
 Mean age±SD (yr)42±1143±11<0.001
 Women (%)5861<0.001
 Race (%)<0.001
  White7977
  Black99
  Other1214
 Donor relation (%)<0.001
  Related6756
  Spousal1415
  Unrelated1929b
  • a Where not stated, missing values comprised <5% of all values.

  • b Donor income categories based on 2000 US Census data.