Table 3.

Characteristics associated with transplant rate, stratified into pre-KAS versus post-KAS eras

	Pre-KAS		Post-KAS
Risk factor	Transplant IRR (95% CI)	P Value	Transplant IRR (95% CI)	P Value
Calendar time (per yr)	0.96a (0.94 to 0.99)	<0.01	1.13a (1.01 to 1.27)	0.03
Female sex	0.98 (0.96 to 1.01)	0.3	0.99 (0.95 to 1.04)	0.8
ABO type
A (versus O)	1.56a (1.51 to 1.60)	<0.001	1.44a (1.37 to 1.51)	<0.001
B	0.89a (0.85 to 0.93)	<0.001	0.90a (0.84 to 0.97)	<0.01
AB	2.57a (2.42 to 2.74)	<0.001	2.72a (2.48 to 2.99)	<0.001
Black	0.90a (0.87 to 0.93)	<0.001	1.15a (1.10 to 1.21)	<0.001
Hispanic	0.76a (0.73 to 0.79)	<0.001	0.99 (0.94 to 1.06)	0.9
Pediatric	6.97a (6.52 to 7.44)	<0.001	5.56a (4.98 to 6.20)	<0.001
CPRA (per 10 units): 0–80	0.99a (0.98 to 1)	<0.01	1.01 (1 to 1.02)	0.2
Rate increase if CPRA>80	5.14a (4.72 to 5.60)	<0.001	0.95 (0.79 to 1.16)	0.6
CPRA (per 10 units): 80–100	0.28a (0.26 to 0.29)	<0.001	1.24a (1.12 to 1.37)	<0.001
Wait time (log yrs)	1.13a (1.12 to 1.14)	<0.001	0.89a (0.88 to 0.90)	<0.001

Transplant rate was modeled using exponential regression. IRR>1 indicates a higher rate of transplant (better access to DDKT); IRR<1 indicates a lower rate (worse access to DDKT). Candidates of ABO type A or AB and pediatric candidates had greater rate of DDKT. Black candidates had a lower rate of DDKT than other patients in the pre-KAS era, but a higher rate than other patients in the post-KAS era. Hispanic candidates had a lower rate of kidney transplantation in the pre-KAS era, but no difference from other patients in the post-KAS era.

^aP<0.05.