Predictors of graft function and survival in second kidney transplantation: A single center experience

Table 7 Quantitative predictors of second graft survival by Cox regression

Variables	HR	95%CI for HR		P value	P value for PH testing1
		Lower bound	Upper bound
Recipient age (yr)	0.976	0.930	1.023	0.306	0.074
Recipient BMI (kg/m2)	0.980	0.810	1.185	0.833	0.787
Duration of first graft function (mo)	1.007	0.994	1.020	0.307	0.059
Total duration of dialysis before second transplantation (including before first transplantation) (mo)	1.006	0.995	1.017	0.295	0.061
Donor age (yr)	1.016	0.979	1.055	0.396	0.852
Recipient age minus donor age (yr)	0.972	0.937	1.009	0.140	0.306
Recipient BMI minus donor BMI (kg/m2)	0.984	0.893	1.085	0.751	0.410
Total ischemia time (min)	1.001	0.999	1.003	0.284	0.579
Operative time (min)	0.995	0.979	1.010	0.497	0.363

¹Testing of the proportional hazards assumption was done by correlating ranked survival times with Schoenfeld residuals.

BMI: Body mass index; HR: Hazard ratio; PH: Proportional hazards.