Re: [R] lme vs. SAS proc mixed. Point estimates and SEs are the same, DFs are different

2007-06-05 Thread Peter Dalgaard
John Sorkin wrote: R 2.3 Windows XP I am trying to understand lme. My aim is to run a random effects regression in which the intercept and jweek are random effects. I am comparing output from SAS PROC MIXED with output from R. The point estimates and the SEs are the same, however the DFs

Re: [R] lme vs. SAS proc mixed. Point estimates and SEs are the same, DFs are different

2007-06-05 Thread Peter Dalgaard
Peter Dalgaard wrote: John Sorkin wrote: R 2.3 Windows XP I am trying to understand lme. My aim is to run a random effects regression in which the intercept and jweek are random effects. I am comparing output from SAS PROC MIXED with output from R. The point estimates and the SEs are

Re: [R] lme vs. SAS proc mixed. Point estimates and SEs are the same, DFs are different

2007-06-05 Thread Doran, Harold
Of Peter Dalgaard Sent: Tuesday, June 05, 2007 4:44 AM To: John Sorkin Cc: r-help@stat.math.ethz.ch Subject: Re: [R] lme vs. SAS proc mixed. Point estimates and SEs are the same, DFs are different John Sorkin wrote: R 2.3 Windows XP I am trying to understand lme. My aim is to run

[R] lme vs. SAS proc mixed. Point estimates and SEs are the same, DFs are different

2007-06-04 Thread John Sorkin
R 2.3 Windows XP I am trying to understand lme. My aim is to run a random effects regression in which the intercept and jweek are random effects. I am comparing output from SAS PROC MIXED with output from R. The point estimates and the SEs are the same, however the DFs and the p values are

Re: [R] lme and SAS Proc mixed

2006-07-03 Thread Spencer Graves
Your example is entirely too complicated for me to parse in the time available, but I have a few questions that I hope might help: First, have you examined str(fit.lme) plus all the other help pages listed under See Also in the lme help page, especially lmeObject? With

[R] lme and SAS Proc mixed

2006-06-30 Thread Kellie J. Archer, Ph.D.
I am trying to use lme to fit a mixed effects model to get the same results as when using the following SAS code: proc mixed; class refseqid probeid probeno end; model expression=end logpgc / ddfm=satterth; random probeno probeid / subject=refseqid type=cs; lsmeans end / diff cl; run; There are