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Asymptotic Properties of M‐estimators Based on Estimating Equations and Censored Data

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  • Jane‐Ling Wang

Abstract

Properties of Huber's M‐estimators based on estimating equations have been studied extensively and are well understood for complete (i.i.d.) data. Although the concepts of M‐estimators and influence curves have been extended for some time by Reid (1981) to incomplete data that are subject to right censoring, results on the general behavior of M‐estimators based on incomplete data remain scattered and restrictive. This paper establishes a general large sample theory for M‐estimators based on censored data. We show how to extend any asymptotic result available for M‐estimators based on complete data to the case of censored data. The extensions are usually straightforward and include the multiparameter situation. Both the lifetime and censoring distributions may be discontinuous. We illustrate several extensions which provide simple and tractable sufficient conditions for an M‐estimator to be strongly consistent and asymptotically normal. The influence curves and asymptotic variance of the M‐estimators are also derived. The applicability of the new sufficient conditions is demonstrated through several examples, including location and scale M‐estimators.

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  • Jane‐Ling Wang, 1999. "Asymptotic Properties of M‐estimators Based on Estimating Equations and Censored Data," Scandinavian Journal of Statistics, Danish Society for Theoretical Statistics;Finnish Statistical Society;Norwegian Statistical Association;Swedish Statistical Association, vol. 26(2), pages 297-318, June.
    • Handle: RePEc:bla:scjsta:v:26:y:1999:i:2:p:297-318
    DOI: 10.1111/1467-9469.00151
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    Cited by:

    1. Szilárd Nemes & Erik Bülow & Andreas Gustavsson, 2020. "A Brief Overview of Restricted Mean Survival Time Estimators and Associated Variances," Stats, MDPI, vol. 3(2), pages 1-13, May.
    2. Frahm, Gabriel & Nordhausen, Klaus & Oja, Hannu, 2020. "M-estimation with incomplete and dependent multivariate data," Journal of Multivariate Analysis, Elsevier, vol. 176(C).
    3. Pedro H. C. Sant'Anna, 2016. "Program Evaluation with Right-Censored Data," Papers 1604.02642, arXiv.org.
    4. Sottile, Gianluca & Frumento, Paolo, 2022. "Robust estimation and regression with parametric quantile functions," Computational Statistics & Data Analysis, Elsevier, vol. 171(C).

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