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 <i...@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 > i...@aghmed.fsnet.co.uk > http://www.aghmed.fsnet.co.uk/**home.html<http://www.aghmed.fsnet.co.uk/home.html> > > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.