Table 2.

Cumulative incidence (%) of listing, waitlist mortality, and kidney transplantation (KT). Cox proportional hazards were adjusted for age, sex, race and Charlson comorbidity index (CCI) for chance of KT listing. Competing risk models were used to quantify the risk of waitlist mortality by SPPB impairment status (≤ 10) in KT waitlist candidates. Transplant was treated as a competing risk, and models were adjusted for age, sex, race, BMI, cause of end-stage renal disease, blood type, and CCI. Poisson regression was used to calculate the incidence rate ratio of KT and adjusted for age, sex, race, BMI, cause of end-stage renal disease, blood type, and CCI.

Outcome by SPPB impairment		Cumulative incidence (%)
	n	6 month	1 year	3 year	5 year
Chance of listing						Adjusted HR	p value
No SPPB impairment	1,495	57.4	65.7	71.2	72.6	REF
SPPB impairment	1,760	45.8	54.2	58.5	59.4	0.640.700.77	<0.001
Risk of waitlist mortality						Adjusted SHR	p value
No SPPB impairment	1,009	0.7	1.2	10.3	30.2	REF
SPPB impairment	942	1.5	3.7	20.9	42.4	1.181.562.06	0.002
Chance of KT						Adjusted IRR	p value
No SPPB impairment	1,009	14.9	27.1	58.2	72.5	REF
SPPB impairment	942	12.5	20.9	41.4	54.7	0.730.840.98	0.02

HR= hazard ratio, SHR= subhazard ratio, IRR= incidence rate ratio