Table 4.

Weighted coefficients for variables associated with death–censored and overall transplant failure at 5 years in both the original Birmingham model and the Birmingham–Mayo model

Variable	Original Birmingham Model			New Birmingham–Mayo Histology–Based Model
	Transformation	Death-Censored Failure	Overall Transplant Failure	Transformation	Death-Censored Failure	Overall Transplant Failure
UACR, mg/mmol	Log scale	—	0.666	Log10 value	—	0.3712
UACR, mg/mmol	Log scale −0.46	1.107	—	Log10 value −46	0.5053	—
Serum albumin, g/L	(Value −40)/5	—	−0.217	(Value −40)/5	—	0.4000
eGFR, ml/min per 1.73 m2	(Value −47)/10	−0.297	−0.206	(Value −47)/10	−0.3969	−0.2367
eGFR2, (ml/min per 1.73 m2)2	[(Value −47)/10]2	0.0711	0.0669	[(Value −47)/10]2	0.0677	0.06613
Rejection		1.038	0.550	—	0.2806	0.4988
Black ethnicity		1.324	1.095	—	0.7582	—
Asian ethnicity	—	1.039	0.653
Recipient age, yr	(Value −46)/10	0.138	0.00149	(Value −46)/10	−0.2366	0.1202
Recipient age, yr2	[(Value −46)/10]2	0.204	0.187	[(Value −46)/10]2	—	0.0858
UACR with rejection interaction	Log(UACR)2 −0.46 for rejection	−0.543	—	Log10(UACR value) −0.46 for rejection	0.5579	—
g Score				Value	0.917	0.5985
ci Score				Value	0.5074	—

Urinary albumin-creatinine ratio values <0.1 amended to 0.1 before logarithmic transformation. —, no value.