Table 4. Unadjusted model.

Variable	HR (95% CI)	P-Value
BSA < 0.9	1.79 (1.29, 2.50)	0.001
Donor → Recipient Gender (reference female → female)
Male → female	1.00 (0.74, 1.34)	0.974
Male → male	0.88 (0.67, 1.14)	0.331
Female → male	0.96 (0.74, 1.24)	0.756
Recipient age	1.10 (1.05, 1.15)	<0.001
Donor age	0.99 (0.98, 1.01)	0.315
Recipient Ethnicity (reference white)
Black	1.97 (1.53, 2.54)	<0.001
Hispanic	1.00 (0.76, 1.32)	0.987
Other	0.70 (0.36, 1.36)	0.297
Dialysis the first week post transplant	4.60 (3.24, 6.55)	<0.001
Human Leukocyte Antigen Mismatch (reference 0 or 1)
2→4	1.32 (0.97, 1.80)	0.072
5→6	1.74 (1.17, 2.60)	0.007
Warm Ischemia time	1.00 (1.00, 1.01)	0.038
Cold Ischemia time	1.01 (0.99, 1.03)	0.438