Censoring occurs when the exact time of the event is not known. There are several types of censoring:
- Right Censoring: When the study ends before the event occurs or the subject leaves the study. - Left Censoring: When the event occurs before the subject enters the study. - Interval Censoring: When the event occurs within a known time interval.
Handling censoring correctly is essential as it can significantly impact the analysis and interpretation of survival data.