Nonparametric smoothed quantile difference estimation for length-biased and right-censored data

Jianhua Shi, Yutao Liu and Jinfeng Xu

Communications in Statistics - Theory and Methods, 2022, vol. 51, issue 10, 3237-3252

Abstract: We consider the nonparametric analysis of length-biased and right-censored data (LBRC) by quantile difference. With its desirable properties such as superior robustness and easy interpretation, quantile difference has been widely used in practice, in particular, for missing and survival data. Existing approaches for nonparametric estimation of quantile difference in length-biased survival data, however, exhibit some drawbacks such as non-smoothness and instabilities. To overcome these difficulties, we proposed a smoothed quantile difference estimation approach to improve its estimating efficiency with its validity justified by asymptotic theories. Simulations are also conducted to evaluate the performance of the proposed estimator. An application to the Channing house data is further provided for illustration.

Date: 2022
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DOI: 10.1080/03610926.2020.1791340

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