[R] logistic regression

[Peter Dalgaard BSA]

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.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
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