Ivy Liu

Victoria University of Wellington

A hybrid method for longitudinal data

This is joint work with Richard Arnold (VUW), Fiona Gunasekara (Otago University) and Ken Richardson (Otago University)

This talk discusses a hybrid method that decomposes the time-varying predictors into two parts, one representing within-subject variation, the other representing between-subject variation. The method combines some of the features from fixed effects and random effects models. We consider various cases that model continuous, binary and ordinal responses. We also show a way to fit the proportional odds model, which is currently the most popular model for ordinal responses, using the conditional approach.