Question

Suppose the following remission durations are observed from 10 patients with solid tumors. Six patients relapse at 3.0, 6.5, 6.5, 10, 12 and 15 months; 1 patient is lost to follow-up at 8.4 months; and 3 patients are still in remission at the end of the study after 4.0, 5.7 and 10 months. Estimate the Kaplan Meier product limit (S(t)) both by hand and using Proc Lifetest. Produce a plot of your results.

Answer 1