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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: J Am Coll Surg. 2018 Jan 5;226(4):615–621. doi: 10.1016/j.jamcollsurg.2017.12.026

Table 2. Crude and Adjusted Relative Risks and 95% Confidence Intervals for the Association Between Acute Rejection Within 1-Year of Transplantation and ABOi and Select Risk Factors, 2000 to 2015.

Risk factor Relative risk (95% CI) Adjusted relative risk (95% CI)1
ABOi 1.85 (1.62, 2.12) 1.76 (1.54, 2.01)
Donor age > 50 y 1.15 (1.10, 1.20) 1.23 (1.18, 1.29)
Recipient age > 50 y 0.74 (0.71, 0.77) 0.71 (0.68, 0.74)
Recipient race
 White Ref Ref
 Black 1.16 (1.10, 1.22) 1.12 (1.06, 1.18)
 Asian 0.74 (0.66, 0.83) 0.73 (0.66, 0.82)
 Other/unknown 0.96 (0.81, 1.13) 0.97 (0.82, 1.15)
Maximum PRA > 80% 1.51 (1.40, 1.63) 1.51 (1.40, 1.64)
HLA mismatches ≥ 3 1.58 (1.51, 1.66) 1.60 (1.53, 1.68)
Previous kidney transplant 1.14 (1.08, 1.21) 1.02 (0.99, 1.09)

Adjusted for recipient race and age at transplant, HLA mismatches GT 3, maximum PRA, previous kidney transplant, and donor age.

ABOi, ABO-incompatible; aRR, adjusted relative risk; HLA, human leukocyte antigen; PRA, panel reactive antibody.