[R] log-linear analysis - calculate treatment effects

Becker Cordula cb486 at cam.ac.uk
Tue Jan 17 21:02:11 CET 2006

Dear all,

I have run a hierarchical log-linear analysis using loglin {stats}  
and came up with a specific model. loglin returns me the parameter  
estimates giving me an idea in which direction the observed  
frequencies deviate from the expected ones for my different factors.  
To assess the significance of any such effects I would need to  
calculate the ratio of the log-linear parameter estimate to its  
standard error (as explained in Howell: Statistical Methods for  
Psychology, 4th Edition, p. 637ff). Unfortunately, I have no idea and  
couldn't find out what this standard error refers to and how to  
calculate it or the ratio using R (well, the ratio is no problem if I  
have the standard error).

I would very much appreciate any help!

Thanks and best wishes, Cordula Becker

Dr. Cordula Becker

Department of Experimental Psychology
University of Cambridge
Downing Site
Cambridge  CB2 3EB
United Kingdom

Tel.: +44 (0)1223 339715
Email: cb486 at cam.ac.uk


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