Tr. Tenhave et al., POPULATION-AVERAGED AND CLUSTER-SPECIFIC MODELS FOR CLUSTERED ORDINALRESPONSE DATA, Statistics in medicine, 15(23), 1996, pp. 2573-2588
We compare population-averaged and cluster-specific models for cluster
ed ordinal data. We consider generalized estimating equations and cons
trained equations maximum likelihood estimation of population-averaged
cumulative legit regression models, and mixed effects estimation of c
luster-specific cumulative logit regression models. A previously repor
ted relationship between population-averaged and cluster-specific para
meters for the binary logistic link appears to hold for analogous para
meters under the cumulative logit link. We address these issues in the
context of data from two cross-over clinical trials.