Model Diagnostics for Proportional and Partial Proportional Odds Models

Model Diagnostics for Proportional and Partial Proportional Odds Models

Proportional Odds and Partial Proportional Odds Models for Ordinal Response Variables

Ordinal regression modelling between proportional odds and non-proportional odds

Variable selection for proportional odds model.

In this paper we study the problem of variable selection for the proportional odds model, which is a useful alternative to the proportional hazards model and might be appropriate when the proportional hazards assumption is not satisfied. We propose to fit the proportional odds model by maximizing the marginal likelihood subject to a shrinkage-type penalty, which encourages sparse solutions and ...

Inference for a family of survival models encompassing the proportional hazards and proportional odds models.

For survival data regression, the Cox proportional hazards model is the most popular model, but in certain situations the Cox model is inappropriate. Various authors have proposed the proportional odds model as an alternative. Yang and Prentice recently presented a number of easily implemented estimators for the proportional odds model. Here we show how to extend the methods of Yang and Prentic...