(a and b) Graphs are plotted on a log scale. Death rate and transplant rate are expressed in events per 100 patient years and per 100 patient months, respectively. Trend lines were determined by weighted linear regression, and P values were calculated using an F-test. (a) Correlation of death rate and transplant rate, by region. (b) Correlation of death rate and transplant rate, by donation service area (DSA). (c) Correlation of death rate with Model for End-Stage Liver Disease (MELD) at transplant, by region. (d) Correlation of death rate with MELD at transplant, by DSA.