Hi Ben, many many thanks!!!!!!
________________________________ From: Ben Bolker <bbol...@gmail.com> To: r-h...@stat.math.ethz.ch Sent: Sat, January 8, 2011 9:39:20 PM Subject: Re: [R] Anova with repeated measures for unbalanced design Frodo Jedi <frodo.jedi <at> yahoo.com> writes: > > Dear all, > I need an help because I am really not able to find over > internet a good example > in R to analyze an unbalanced table with Anova with > repeated measures. > For unbalanced table I mean that the questions are > not answered all by the same > number of subjects. > > For a balanced case I would use the command > > aov1 = aov(response ~ stimulus*condition + > Error(subject/(stimulus*condition)), > data=scrd) I recommend that you find a copy of Pinheiro and Bates 2000 ... > > Does the same code still work for unbalanced design? No, it doesn't. > Can anyone provide a R example of code in order to get the same analysis? Something like library(nlme) lme1 <- lme(response~stimulus*condition,random=~1|subject,data=scrd) or possibly lme1 <- lme(response~stimulus*condition,random=~stimulus*condition|subject, data=scrd) if your experimental design would allow you to estimate stimulus and condition effects for each subject. Further questions along these lines should probably go to the r-sig-mixed-model mailing list. ______________________________________________ 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. [[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.
