Semi-parametric regression models for the joint estimation of marginal mean and within-cluster pairwise association parameters are used in a variety of settings for population-averaged modeling of ...

A random-effects ordinal regression model is proposed for analysis of clustered or longitudinal ordinal response data. This model is developed for both the probit and logistic response functions.

An alternative model for ordinal traits is the so-called multivariate model or cumulative threshold model, in which we formulate the ordinal trait analysis as a multivariate problem.