A sensitivity analysis
was also done for the mortality risk, examining patients
after they had been on dialysis > 4 months. Survival
data were not collected from patients after renal transplantation.
Cumulative survival curves were constructed
using the Kaplan-Meier method, with patients stratified
by the presence or absence of diabetes, and with
patients stratified for the presence or absence of kidney
disease. Survival rates were compared using the logrank
test.