does stratified cox model include proportional hazards does a cox model include the effects of predictors what does stratified cox model show what is the cox model used for does cox model include proportional hazards which assumptions are used when fitting a cox model can you do a cox model with the proportional hazards assumption? why should a cox model be stratified what is the difference between a cox and an oblong model what is the effect of a cox model why is a cotyloin stratified what would happen to the predictors in a cox model? which assumptions are missing in a cox model? what assumptions are missing? what is the purpose of stratified cox models what is the effect of stratified cox does a cox model include proportional hazards why do you need a cox stratified model does cox model affect proportional hazards which of the following models does not include information or influence of a predictor? does stratified cox model include proportional hazards assumptions