Table 2.

Multivariable Poisson regression analysis for estimating the relationships between different patient factors and the presence of pretransplant non-HLA antibodies (N=874).

Predictors	RR	95% CI	p-value
Univariable analysis
Risk rates for the broadness of the non-HLA antibodies
Time on dialysis (per 1000 days)	1.05	0.99 – 1.13	0.11
Type of dialysis (hemodialysis vs. other)	1.18	1.02 – 1.36	0.03
Repeat transplantation	0.69	0.58 – 0.82	<0.0001
Recipient age (10 years)	1.06	1.01 – 1.11	0.02
Recipient sex (male)	1.16	1.03 – 1.31	0.02
Risk rates for the strength of the non-HLA antibodies
Time on dialysis (per 1000 days)	1.08	1.01 – 1.16	0.03
Type of dialysis (hemodialysis vs. other)	1.22	1.05 – 1.41	0.009
Repeat transplantation	0.74	0.63 – 0.89	0.0009
Recipient age (10 years)	1.06	1.01 – 1.11	0.01
Recipient sex (male)	1.12	0.99 – 1.28	0.07
Multivariable analysis
Risk rates for the broadness of the non-HLA antibodies
Type of dialysis (hemodialysis)	1.18	1.03 – 1.37	0.02
Repeated transplantation	0.71	0.59 – 0.84	<0.0001
Recipient age (10 years)	1.04	0.99 – 1.09	0.13
Recipient sex (male)	1.12	0.99 – 1.27	0.08
Risk rates for the strength of the non-HLA antibodies
Type of dialysis (hemodialysis)	1.21	1.05 – 1.41	0.01
Time on dialysis (per 1000 days)	1.10	1.03 – 1.18	0.006
Repeated transplantation	0.73	0.62 – 0.88	0.0006
Recipient age (10 years)	1.06	1.01 – 1.11	0.02

RR, Rate Ratio.