[R] logistic regression

[Peter Dalgaard BSA]

Thomas Lumley <tlumley at u.washington.edu> writes:


> On 14 Mar 2003, Peter Dalgaard BSA wrote:
> 
> > Frank E Harrell Jr <fharrell at virginia.edu> writes:
> >
> >
> > > If you have no more than one continuous variable you can pre-process
> > > (outside of R) to collapse the data into frequency counts. I did not
> > > check to see if glm handles frequency case weights. The lrm function
> > > in the Design package
> > > (http://hesweb1.med.virginia.edu/biostat/s/Design.html) does.
> >
> > glm can have a matrix (cbind(success,failure)) as response.
> 
> Or case weights.

Right. (And actually explained on p.194 in my own book too! I just got
myself confused over whether it would check for non 0-1 responses.)

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
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