[R-sig-ME] Extract standard error of the variance component in lme4 package (GLMM).

Ben Bolker bbolker at gmail.com
Tue Nov 11 14:38:44 CET 2014

Martí Casals <mcasals at ...> writes:

> Dear all,
> I’ve fitted  a classical Poisson GLMM with lme4. I obtain the variance of
> random effect (variance component) with the following script:
> print(VarCorr(model),comp="Variance")
> but I’d like to print the standard error of the variance component. I think
> it is possible with the new version of the lme4 package. How it can be
> obtain?
> Thanks in advance,
> Martí

  See e.g. http://www.rpubs.com/bbolker/varwald ... keeping in mind
that the standard error is not necessarily reliable for computing
confidence intervals (e.g. the sampling distribution of the 
standard error can be far from Normal)

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