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Bayesian Multilevel Compositional Data Analysis with the R Package multilevelcoda
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DOI：10.1080/00273171.2025.2565598.png)
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Abstract
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Multilevel compositional data, such as data sampled over time that are non-negative and sum to a constant value, are common in various fields. However, there is currently no software specifically built to model compositional data in a multilevel framework. TheRpackagemultilevelcodaimplements a collection of tools for modeling compositional data in a Bayesian multivariate, multilevel pipeline. The user-friendly setup only requires the data, model formula, and minimal specification of the analysis. This article outlines the statistical theory underlying the Bayesian compositional multilevel modeling approach and details the implementation of the functions available inmultilevelcoda, using an example dataset of compositional daily sleep-wake behaviors. This innovative method can be used to robustly answer scientific questions from the increasingly available multilevel compositional data from intensive, longitudinal studies.
Keywords:
Compositional data analysis
multilevel model
Bayesian inference
R
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