Very different results from lmer and MCMCglmm
On Tue, 2012-01-31 at 19:43 +0000, ONKELINX, Thierry wrote:
A few remarks on the model itself. You are adding 3 factors both as fixed and random effect. That is not a good idea since they will be competing for exact the same information. Hence the huge CI with the MCMC model.
Ah, right. I reran it without the fixed effects and the results were much better.
I'm a bit surprised with the lmer results as well. I would expect to see zero variances for these random effects.
Wow. lmer is really robust! Thanks very much for the help.
Stuart Luppescu -=- slu .at. ccsr.uchicago.edu University of Chicago -=- CCSR ???????? -=- Kernel 3.2.1-gentoo-r2 If I were to be treated by a cure created by stepwise regression, I would prefer voodoo. -- Dieter Menne (in a thread about regressions with many variables) R-help (October 2009)