Semiparametric Proportional Mean Residual Life Model With Censoring Indicators Missing at Random

Xiaolin Chen and Qihua Wang

Communications in Statistics - Theory and Methods, 2015, vol. 44, issue 24, 5161-5188

Abstract: For right-censored survival data, the information that whether the observed time is survival or censoring time is frequently lost. This is the case for the competing risk data. In this article, we consider statistical inference for the right-censored survival data with censoring indicators missing at random under the proportional mean residual life model. Simple and augmented inverse probability weighted estimating equation approaches are developed, in which the nonmissingness probability and some unknown conditional expectations are estimated by the kernel smoothing technique. The asymptotic properties of all the proposed estimators are established, while extensive simulation studies demonstrate that our proposed methods perform well under the moderate sample size. At last, the proposed method is applied to a data set from a stage II breast cancer trial.

Date: 2015
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DOI: 10.1080/03610926.2013.879894

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