Copula Link-Based Additive Models for Right-Censored Event Time Data. Issue 530 (2nd April 2020)

• Record Type: Journal Article
• Authors: Marra, Giampiero; Radice, Rosalba
• Is Part Of: Journal of the American Statistical Association. Volume 115:Issue 530(2020)
• Page Start: 886
• Page End: 895
• Publication Date: 2020-04-02
• Subjects: Additive predictor -- Bivariate survival data -- Copula -- Joint model -- Link function -- Simultaneous parameter estimation; Statistics -- Periodicals; Statistics -- Periodicals; Statistiques -- Périodiques; États-Unis -- Statistiques -- Périodiques; 519.5
• DOI: 10.1080/01621459.2019.1593178
• Languages: English
• ISSNs: 0162-1459

Abstract

Abstract: This article proposes an approach to estimate and make inference on the parameters of copula link-based survival models. The methodology allows for the margins to be specified using flexible parametric formulations for time-to-event data, the baseline survival functions to be modeled using monotonic splines, and each parameter of the assumed joint survival distribution to depend on an additive predictor incorporating several types of covariate effects. All the model's coefficients as well as the smoothing parameters associated with the relevant components in the additive predictors are estimated using a carefully structured efficient and stable penalized likelihood algorithm. Some theoretical properties are also discussed. The proposed modeling framework is evaluated in a simulation study and illustrated using a real dataset. The relevant numerical computations can be easily carried out using the freely available GJRM R package. Supplementary materials for this article are available online.