Hello,
I was wondering about the same thing a couple of days and found these
answers:
http://thread.gmane.org/gmane.comp.lang.r.lme4.devel/3281
http://thread.gmane.org/gmane.comp.lang.r.lme4.devel/684

I am not sure if it is correct, but what I am planning to do is to plot
predicted values from the mixed-effects model against observed values and
then fit a linear regression and report the R^2 of that regression.

Susana.


On Wed, Nov 16, 2011 at 1:20 PM, FMH <kagba2006@yahoo.com> wrote:

>
> Dear All,
>
> Could someone please advice me any functions in R which is often used to
> check to goodness of fit of a linear mixed-effects model?
>
> Thanks
> Fir
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