Dear Coleagues ,
As my friend John  mentined,* the measure of association from a logistic
regression is the odds ratio, not the relative risk*. but the point is in
follow-up studies, it is commonly preferred to estimate a risk ratio rather
than an odds ratio. Thats why im looking for RR in logistic models.
Bytheway thank you all for ur consideration.
Amin


On Sun, Feb 3, 2013 at 1:42 PM, Michael Dewey <info@aghmed.fsnet.co.uk>wrote:

> At 10:49 30/01/2013, aminreza Aamini wrote:
>
>> Hi all,
>> I am very grateful to all those who write to me
>> 1) how i  can  obtain relative risk (risk ratio) in logistic regression
>> in R.
>>
>
> @TECHREPORT{lumley06,
>   author = {Lumley, T and Kronmal, R and Ma, S},
>   year = 2006,
>   title = {Relative risk regression in medical research: models, contrasts,
>           estimators, and algorithms},
>   number = 293,
>   institution = {{UW} Biostatistics Working Paper Series},
>   keywords = {glm, Poisson},
>   url = {http://www.bepress.com/**uwbiostat/paper293<http://www.bepress.com/uwbiostat/paper293>
> }
>
> }
>
>
>  2) how to obtain  the predicted risk for a certain individual using
>> fitted regression model in R.
>>
>> Many thanks, in advance, for your help.
>>
>> Amin.
>>
>
> Michael Dewey
> info@aghmed.fsnet.co.uk
> http://www.aghmed.fsnet.co.uk/**home.html<http://www.aghmed.fsnet.co.uk/home.html>
>
>

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