Males   Females
(N=22,276)   (N=15,825)
Characteristics Cases
(N=257)
Noncases
(N=22,019)
Cases
(N=122)
Noncases
(N=15,703)
Age at Transplant[years(mean+SD)] 54.2+9.5** 47.6+12.3   52.0+10.1** 47.2+12.3
Race
White 172(66.9) 15,554(70.6) 73(59.8) 10,620(67.6)
Black
Asian/Indian/Other
70(27.2)
15(5.8)
5,185(23.5)
1,274(5.8)
44(36.1) 4,003(25.5)
5(4.1)

1,077(6.9)
College Education 94(36.6) 8,220(37.3) 30(24.6) 5,474(34.9)
BMI
<18.5 4(1.6) 375(1.7) 2(1.6) 662(4.2)
18.5-29.9 125(48.6) 12,170(55.3) 52(42.6) 8,116(51.7)
30+ 39(15.2) 3,899(17.7) 21(17.2) 2,943(18.7)
Primary Cause of ESRD
Diabetes 121(47.1) 5,483(24.9) 62(50.8) 3,549(22.6)
Hypertension 53(20.6) 4,359(19.8) 21(17.2) 2,524(16.1)
Primary nephritis 43(16.7)** 6,063(27.5) 12(9.8)** 3,825(24.4)
PKD 9(3.5) 2,211(10.0) 6(4.9) 1,829(11.6)
Miscellaneous 19(7.4) 2,563(11.6) 16(13.1) 2,978(19.0)
Unknown factor 12(4.7) 1,340(6.1) 5(4.1) 998(6.4)
Hypertension 107(41.6) 10,800(49.0) 53(43.4) 7,505(47.8)
(independent of cause of ESRD)
Time on dialysis (months)
0-12 88(34.2) 9,074(41.2) 35(28.7) 6,596(42.0)
13-24 48(18.7) 4,440(20.2) 29(23.8) 2,962(18.9)
>24 121(47.1) 8,505(38.6) 58(47.5) 6,145(39.1)
Creatinine level at discharge
0.1-1.2 (mg/dL) 35(13.6) 2,932(13.3) 33(27.0) 5,919(37.7)
1.3-1.7 53(20.6) 5,782(26.3) 21(17.2)* 3,367(21.4)
1.8-2.7 66(25.7) 5,728(26.0) 17(13.9) 2,474(15.8)
2.8+ 99(38.5) 7,042(32.0) 45(36.9) 3,573(22.8)
Living Donor type 66(25.7)** 8,882(40.3) 33(27.0)* 6,447(41.1)
Female Donor sex 127(49.4) 10,645(48.3) 56(45.9) 7,389(47.1)
Delayed graft function 64(24.9)** 4,400(20.0) 43(35.2)** 2,735(17.4)
Pretransplant blood transfusion 83(32.3)** 5,184(23.5) 46(37.7) 4,956(31.6)
Values are presented as no. (%) or mean ± SD
Some columns do not add to 100% because of missing data
*p < 0.01, **p < 0.001
*For continuous outcomes, comparison by Student t test. For categorical outcomes, comparison by chi square test
Conversion factors for units: serum creatinine in mg/dL to umol/L, x76.26

Table 1: Baseline Characteristics of the Study Population.