[R] interpreting bootstrap corrected slope [rms package]

[David Winsemius]

On Oct 23, 2011, at 7:37 PM, apeer wrote:

> Does your point about proportionality also hold for ordinality?  In  
> other
> words, if I have several X variables that do not behave in an ordinal
> fashion with Y, should I still include them in the full model?  My
> understanding or perhaps misunderstanding of the ordinality  
> assumption was
> that all X variables included in the model should behave in an ordinal
> fashion with Y.  Is that not the case?

Why should non-monotonic relationships be discarded? Are you implying  
they are impossible from a scientific perspective?

-- 

David Winsemius, MD
West Hartford, CT