This bit helped me to match lme results in R with SAS, try options(contrasts=c("contr.sum","contr.poly"))
before lme model. -- View this message in context: http://r.789695.n4.nabble.com/Covariance-structure-for-lme-tp4630413p4635005.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.