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Joint Bayesian longitudinal models for mixed outcome types and associated model selection techniques

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Abstract

Motivated by data measuring progression of leishmaniosis in a cohort of US dogs, we develop a Bayesian longitudinal model with autoregressive errors to jointly analyze ordinal and continuous outcomes. Multivariate methods can borrow strength across responses and may produce improved longitudinal forecasts of disease progression over univariate methods. We explore the performance of our proposed model under simulation, and demonstrate that it has improved prediction accuracy over traditional Bayesian hierarchical models. We further identify an appropriate model selection criterion. We show that our method holds promise for use in the clinical setting, particularly when ordinal outcomes are measured alongside other variables types that may aid clinical decision making. This approach is particularly applicable when multiple, imperfect measures of disease progression are available.

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Acknowledgements

Research and data collection reported in this publication was supported by the National Institute of Allergy and Infectious Disease of the National National Institutes of Health under Award Number R01AI139267, as well as through an award from the Masters of Foxhounds Association Foundation. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or any other party.

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Correspondence to Grant Brown.

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Seedorff, N., Brown, G., Scorza, B. et al. Joint Bayesian longitudinal models for mixed outcome types and associated model selection techniques. Comput Stat 38, 1735–1769 (2023). https://doi.org/10.1007/s00180-022-01280-x

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  • DOI: https://doi.org/10.1007/s00180-022-01280-x

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