Source of Support: None, Conflict of Interest: None
Some times, the clinician / researcher may be looking for time or interval before the next event occurs, as in the case of an epileptic fit. The statistical method used for such analysis is life table analysis or survival analysis. This method allows the researcher to use data from patients who drop out/die during the follow up period as well as those who may not experience the event at the end of the study. Thus it is possible to compute the amount of risk of occurrence at a particular time point. In this review an attempt is made to introduce the topic popularly known as survival analysis along with two illustrations.