Congratulations to PhD candidate Maximilian Rohde on the publication of Bayesian transition models for ordinal longitudinal outcomes in Statistics in Medicine. The paper was co-authored by professor Benjamin French, adjoint professor Thomas G. Stewart, and professor Frank Harrell. In the words of the tutorial abstract: “Ordinal longitudinal outcomes are becoming common in clinical research, particularly in the context of COVID-19 clinical trials. These outcomes are information-rich and can increase the statistical efficiency of a study when analyzed in a principled manner. We present Bayesian ordinal transition models as a flexible modeling framework to analyze ordinal longitudinal outcomes. We develop the theory from first principles and provide an application using data from the Adaptive COVID-19 Treatment Trial (ACTT-1) with code examples in R. We advocate that researchers use ordinal transition models to analyze ordinal longitudinal outcomes when appropriate alongside standard methods such as time-to-event modeling.”
