Right censoring in statistics

Right censoring occurs when the outcome of interest (such as failure or death) hasn't happened for some subjects by the end of a study period, or they leave the study early. In such cases, we only know that their event time exceeds a certain value, but not the exact time. For example, if a patient is still alive at the study's end, we know they survived beyond a certain point, but not their total survival time. Right censoring is common in survival analysis and helps us make the most of incomplete data while analyzing time-to-event information.