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Copula-graphic estimation with left-truncated and right-censored data
Authors:Jacobo de Uña-Álvarez  Noël Veraverbeke
Institution:1. Department of Statistics and Operations Research and Center for Biomedical Research (CINBIO), University of Vigo, Vigo, Spain;2. Center for Statistics, Universiteit Hasselt, Diepenbeek, Belgium;3. Center for Business Mathematics and Informatics, North-West University, Potchefstroom, South Africa
Abstract:In Survival Analysis and related fields of research right-censored and left-truncated data often appear. Usually, it is assumed that the right-censoring variable is independent of the lifetime of ultimate interest. However, in particular applications dependent censoring may be present; this is the case, for example, when there exist several competing risks acting on the same individual. In this paper we propose a copula-graphic estimator for such a situation. The estimator is based on a known Archimedean copula function which properly represents the dependence structure between the lifetime and the censoring time. Therefore, the current work extends the copula-graphic estimator in de Uña-Álvarez and Veraverbeke Generalized copula-graphic estimator. Test. 2013;22:343–360] in the presence of left-truncation. An asymptotic representation of the estimator is derived. The performance of the estimator is investigated in an intensive Monte Carlo simulation study. An application to unemployment duration is included for illustration purposes.
Keywords:Almost sure representation  Archimedean copula  cross-sectional data  dependent censoring  left-truncation
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