median survival time

Meaning of median survival time: The time from either diagnosis or treatment at which half of the patients with a given disease are found to be, or expected to be, still alive.

Definition of median survival time

The time from either diagnosis or treatment at which half of the patients with a given disease are found to be, or expected to be, still alive. In a clinical trial, median survival time is one way to measure how effective a treatment is. Also called median overall survival and median survival.