Open Access
2018 High-dimensional inference for personalized treatment decision
X. Jessie Jeng, Wenbin Lu, Huimin Peng
Electron. J. Statist. 12(1): 2074-2089 (2018). DOI: 10.1214/18-EJS1439


Recent development in statistical methodology for personalized treatment decision has utilized high-dimensional regression to take into account a large number of patients’ covariates and described personalized treatment decision through interactions between treatment and covariates. While a subset of interaction terms can be obtained by existing variable selection methods to indicate relevant covariates for making treatment decision, there often lacks statistical interpretation of the results. This paper proposes an asymptotically unbiased estimator based on Lasso solution for the interaction coefficients. We derive the limiting distribution of the estimator when baseline function of the regression model is unknown and possibly misspecified. Confidence intervals and p-values are derived to infer the effects of the patients’ covariates in making treatment decision. We confirm the accuracy of the proposed method and its robustness against misspecified function in simulation and apply the method to STAR∗D study for major depression disorder.


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X. Jessie Jeng. Wenbin Lu. Huimin Peng. "High-dimensional inference for personalized treatment decision." Electron. J. Statist. 12 (1) 2074 - 2089, 2018.


Received: 1 October 2017; Published: 2018
First available in Project Euclid: 21 June 2018

zbMATH: 06917431
MathSciNet: MR3816967
Digital Object Identifier: 10.1214/18-EJS1439

Primary: 62F35 , 62J05
Secondary: 62P10

Keywords: Large $p$ small $n$ , model misspecification , Optimal treatment regime , robust regression

Vol.12 • No. 1 • 2018
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