TABLE 2.

Cox proportional hazard regression analysis of variables associated with active antibody-mediated rejection within 1 year after kidney transplantation.

		Univariate				Multivariate
		HR1	95% CI2		p-value	HR	95% CI		p-value
Recipient age	<50 years	reference				reference
	≥50 years	2.72	1.51	4.90	0.001	1.04	0.53	2.05	0.90
Donor age	<60 years	reference
	≥60 years	0.77	0.46	1.30	0.34
Recipient sex	Female	reference
	Male	0.66	0.39	1.11	0.12
Donor sex	Female	reference
	Male	1.54	0.91	2.59	0.12
Relation of donor	Relative	reference				reference
	Unrelated	5.58	2.82	11.0	<0.001	4.48	2.05	9.79	<0.001
ABO compatibility	Compatible	reference
	Incompatible	1.53	0.90	2.61	0.12
Number of transplantations	Primary	reference				reference
	Multiple	2.44	1.26	4.70	0.008	1.99	1.01	3.91	0.05
CDC3 for B cells	Negative	reference
	Positive	6.84	2.14	21.9	0.001
FCXM4 for T cells	Negative	reference
	Positive	9.25	5.05	16.9	<0.001
FCXM for B cells	Negative	reference
	Positive	8.17	3.26	20.5	<0.001
Solid–phase immunoassay	Negative	reference				reference
	Positive	9.72	5.70	16.6	<0.001	7.05	4.16	12.4	<0.001

HR¹, hazard ratio; CI², confidence interval; CDC³, complement-dependent cytotoxity; FCXM⁴, flow cytometry crossmatch.