Survival time is typically calculated using survival analysis techniques. These methods take into account the time until the event of interest and can handle censored data, which occurs when the event has not happened for some subjects during the study period. Common techniques include:
Kaplan-Meier Estimator: A non-parametric method that provides a step function estimate of the survival curve. Cox Proportional Hazards Model: A semi-parametric method that evaluates the effect of several variables on survival time. Life Table Analysis: A method that divides the observation period into intervals and calculates survival probabilities for each interval.
