Doubly Robust Learning for Estimating Individualized Treatment with Censored Data.
Doubly Robust Learning for Estimating Individualized Treatment with Censored Data.
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DOI:
10.1093/biomet/asu050
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发表时间:
2015-03-01
期刊:
影响因子:
2.7
通讯作者:
Kosorok MR
中科院分区:
文献类型:
--
作者:
Zhao YQ;Zeng D;Laber EB;Song R;Yuan M;Kosorok MR
Individualized treatment rules recommend treatments based on individual patient characteristics in order to maximize clinical benefit. When the clinical outcome of interest is survival time, estimation is often complicated by censoring. We develop nonparametric methods for estimating an optimal individualized treatment rule in the presence of censored data. To adjust for censoring, we propose a doubly robust estimator which requires correct specification of either the censoring model or survival model, but not both; the method is shown to be Fisher consistent when either model is correct. Furthermore, we establish the convergence rate of the expected survival under the estimated optimal individualized treatment rule to the expected survival under the optimal individualized treatment rule. We illustrate the proposed methods using simulation study and data from a Phase III clinical trial on non-small cell lung cancer.
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