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• W3003262140 endingPage "2506" @default.
• W3003262140 startingPage "2493" @default.
• W3003262140 abstract "Clustered and multivariate survival times, such as times to recurrent events, commonly arise in biomedical and health research, and marginal survival models are often used to model such data. When a large number of predictors are available, variable selection is always an important issue when modeling such data with a survival model. We consider a Cox’s proportional hazards model for a marginal survival model. Under the sparsity assumption, we propose a penalized generalized estimating equation approach to select important variables and to estimate regression coefficients simultaneously in the marginal model. The proposed method explicitly models the correlation structure within clusters or correlated variables by using a prespecified working correlation matrix. The asymptotic properties of the estimators from the penalized generalized estimating equations are established and the number of candidate covariates is allowed to increase in the same order as the number of clusters does. We evaluate the performance of the proposed method through a simulation study and analyze two real datasets for the application." @default.
• W3003262140 created "2020-02-07" @default.
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• W3003262140 date "2020-01-29" @default.
• W3003262140 modified "2023-10-03" @default.
• W3003262140 title "Variable selection via penalized generalized estimating equations for a marginal survival model" @default.
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• W3003262140 doi "https://doi.org/10.1177/0962280220901728" @default.
• W3003262140 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31994449" @default.
• W3003262140 hasPublicationYear "2020" @default.
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