We consider methods for analyzing categorical regression models when some covariates (Z) are completely observed but other covariates (X) are missing for some subjects. When data on X are missing at ...

This is a preview. Log in through your library . Abstract In a clinical trial on the treatment of lung cancer two chemotherapeutic strategies were compared with respect to tumour response, which was ...

The first step in conducting a regression-based study is to specify a model. In real applications, this is usually the most challenging step - deciding which variables “belong” in the model and which ...