On Nov 16, 2010, at 9:18 AM, David Winsemius wrote: > > On Nov 16, 2010, at 10:08 AM, Robert Ruser wrote: > >> Dear R Users, >> I'm looking for a package that allows to test hypothesis about a >> homogeneity of odds ratio in k 2x2 tables. I know that Breslow-Day is >> suitable but does anybody could me point out a package? I found diffR, >> but as far as I see this package is for IRT theory. > > Try searching: > http://search.r-project.org/cgi-bin/namazu.cgi?query=&max=100&result=normal&sort=score&idxname=Rhelp10&idxname=Rhelp08&idxname=Rhelp02&idxname=functions > > At least two of the links point to this: > > http://www.math.montana.edu/~jimrc/classes/stat524/Rcode/breslowday.test.r
You might also want to look at: http://statweb.calpoly.edu/aschaffn/418/documents/Script8.01.pdf which has code that includes the Tarone adjustment based upon: On Heterogeneity Tests Based on Efficient Scores Tarone RE Biometrika 72, 91-95. 1985 Supported by Breslow in: Statistics in Epidemiology: The Case-Control Study N. E. Breslow Journal of the American Statistical Association Vol. 91, No. 433 (Mar., 1996), pp. 14-28 and also look at the code for the woolf() function in ?mantelhaen.test HTH, Marc Schwartz ______________________________________________ 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.
