Overall Survival Analysis
death
RECURRENCE
Kaplan-Meier 5-year analyses of overall survival time defined as time from the date of randomization to the date of death from any cause, for selenium and vitamin E. Patients alive at the time of analysis were censored at the date last known to be alive. For patients not observed to have experienced recurrence at the time of analysis, the interval was censored at the date last known to be recurrence free. HR indicates hazard ratio.