Hi, I am new to R. Anyone can explain the following from R-help or
anyone can direct me how to calculate odds ratio from logistic model in
R. Thank you very much. Guoya

 

 

Stefano <stecalza at tiscalinet.it
<https://stat.ethz.ch/mailman/listinfo/r-help> > writes:
>Hi all.
> 
>A simple question.
>Is there a function to compute the Odds Ratio and its confidence
intervall, from 
>a logistic model (glm(.......,family=binomial....). I've written my
own, but 
>certainly someone did a better job.
 
I show a simple function to do this in my introductory notes available
from:
 
        http://www.myatt.demon.co.uk
 
basically it is:
 
        lreg.or <- function(model)
          {
          lreg.coeffs <- coef(summary(salex.lreg))
          lci <- exp(lreg.coeffs[ ,1] - 1.96 * lreg.coeffs[ ,2])
          or <- exp(lreg.coeffs[ ,1])
          uci <- exp(lreg.coeffs[ ,1] + 1.96 * lreg.coeffs[ ,2])
          lreg.or <- cbind(lci, or, uci)        
          lreg.or
          }
 

 


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