TABLE 2.

Definition of transplant system metrics

Metric	Definition
Waitlist mortality	The number of candidates who died within 14 d of being listed on the waitlist during simulation
Transplants	The number of transplants that occurred during simulation
cPRA 99.9–100 transplants	The number of transplants that occurred during the simulation for candidates with a cPRA between 99.9 and 100 at the time of transplant. These are candidates estimated to be incompatible with 99.9%–100% of the donor population due to immunosensitivity
EPTS 0–20 transplants	The number of transplants that occurred during the simulation for candidates with an EPTS value between 0 and 20, inclusive, at the time of transplant. These are candidates who have the longest EPTS
Pediatric transplants	The number of simulated transplants that occurred for candidates <18 y of age at the time of listing
Transplant rate	The number of transplants that occurred during simulation for candidates within a certain group (eg, blood type A candidates) is divided by the sum of qualifying time accrued by all candidates within that group
Average waiting time at transplant	The average waiting time of transplant recipients at the transplant throughout the simulation
≥5 y wait transplant percentage	The percentage of candidates who accrued >5 y of qualifying wait time during the simulation that received a transplant during the simulation
Median travel distance	The median distance between the hospitals of transplant recipients and organ donors during the simulation
1-y graft failures	The number of simulated transplants that failed within 1 y of transplant
Blood type transplant rate disparity	The difference between the highest and lowest transplant rate among A, B, AB, and O blood type candidates during the simulation
cPRA transplant rate disparity	The difference between the highest and lowest transplant rate during the simulation among the following cPRA groups: 0%, 0%–20%, 20%–80%, 80%–98%, 98%–99.5%, 99.5%–99.9%, and 99.9%–100%
Geographic transplant rate disparity	Twice the SD in simulated transplant rates between DSAs
Racial transplant rate disparity	The difference between the highest and lowest simulated transplant rate among candidates grouped according to race in the following categories: Black, Asian, White, and Other Race
Sex transplant rate disparity	The difference between the simulated transplant rate of male and female candidates
Latino/non-Latino transplant rate disparity	The difference between the transplant rates of Latino candidates and the transplant rate of non-Latino candidates during the simulation
Group wait time	The total qualifying time accrued by all candidates within a certain group over the simulation is divided by the number of transplants that group received
Geographic wait time disparity	Twice the SD in simulated group wait times between DSAs

Definitions of kidney transplant system metrics used in the article.

cPRA, calculated panel-reactive antibody; DSA, Donation Service Area; EPTS, expected posttransplant survival.