Survival Analysis

Survival analysis is a collection of methods for the analysis of data that involve the time to occurrence of some event and, more generally, to multiple durations between occurrences of events. Apart from their extensive use in studies of survival times in clinical and health-related studies, these methods have found application in several other fields, including industrial engineering (e.g., reliability studies and analyses of equipment failure times), demography (e.g., analyses of time intervals between successive child births), sociology (e.g., studies of recidivism, duration of marriages), and labor economics (e.g., analysis of spells of unemployment, duration of strikes). The terms duration analysis, event-history analysis, failure-time analysis, reliability analysis, and transition analysis refer essentially to the same group of techniques, although the emphases in certain modeling aspects ...