ABSTRACT
Frequently investigators are interested in modeling the distribution of the time that elapses before a certain event occurs. Generally speaking, the modeling of the distribution is called the time-to-event analysis but because of the wide range of applications, this analysis may bear other names depending on the field. For instance, in a clinical trial the event may be a medical complication in a patient or even death, and the analysis is called the survival analysis. In industrial processes, a machinery component malfunction may be the event of interest, and the analysis is termed reliability analysis or time-to-failure analysis or duration analysis.
