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Updated: Oct 25, 2025

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
Published on: July 3, 2020
Comments on "Intermediate and advanced topics in multilevel logistic regression analysis"
Lei Li1, Matthew A Rysavy2, Abhik Das3
1Biostatistics and Epidemiology Division, RTI International, Research Triangle Park, NC, USA.
Abstract:
Multilevel random-effects models have become a popular method in the analysis of clustered data. Such analyses enable researchers to quantify within-cluster and between-cluster variations of an outcome and to separate individual-level and cluster-level effects of covariates by taking advantage of the hierarchical structure of clustered data. The tutorial article by Austin and Merlo1 was a timely effort intended to provide a comprehensive and up-to-date review of the tools and approaches. However, we feel that some important ideas and concepts described in this article need clarification.
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