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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16473

Title: A joint model for longitudinal continuous and time to event outcomes with direct marginal interpretation.
Authors: Efendi, Achmad
Molenberghs, Geert
Njagi, Edmund Njeru
Dendale, Paul
Issue Date: 2013
Citation: BIOMETRICAL JOURNAL, 55 (4), p. 572-588
Abstract: Joint modeling of various longitudinal sequences has received quite a bit of attention in recent times. This paper proposes a so-called marginalized joint model for longitudinal continuous and repeated time-to-event outcomes on the one hand and a marginalized joint model for bivariate repeated time-toevent outcomes on the other. The model has several appealing features. It flexibly allows for association among measurements of the same outcome at different occasions as well as among measurements on different outcomes recorded at the same time. The model also accommodates overdispersion. The time-to-event outcomes are allowed to be censored. While the model builds upon the generalized linear mixed model framework, it is such that model parameters enjoy a direct marginal interpretation. All of these features have been considered before, but here we bring them together in a unified, flexible framework. The model framework’s properties are scrutinized using a simulation study. The models are applied to data from a chronic heart failure study and to a so-called comet assay, encountered in preclinical research. Almost surprisingly, the models can be fitted relatively easily using standard statistical software.
URI: http://hdl.handle.net/1942/16473
DOI: 10.1002/bimj.201200159
ISI #: 000325887000008
ISSN: 0323-3847
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

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