[R-sig-ME] General Questions Regarding lmer Output

[Doran, Harold]

Jacob

In terms of (1), see the ?ranef help and specifically the postVar
argument. That will return the conditional variances which you can use for
the Cis you desire.

In terms of (2), this is a longstanding issue with mixed models and has
been well-discussed on this list for years. See the link below for a
description/rationale for why p-values, etc do not appear.

The main issue is that it is unknown what distribution that statistics
actually follow.

https://stat.ethz.ch/pipermail/r-help/2006-May/094765.html

On 9/13/13 2:11 PM, "AvianResearchDivision" <segerfan83 at gmail.com> wrote:

>Hi all,
>
>I have a couple of seemingly basic questions about the lmer output.  I am
>running a model with random slopes and intercepts, along with a couple of
>fixed effects.  I am using lmerTest to obtain F statistics and P values as
>well.  My questions are:
>
>1.  How do I obtain 95% CI for the random effects?
>
>2.  If I use anova(model, ddf="Kenward-Roger"), I get F statistics and P
>values for my fixed effects, however, it never gives me a F statistic or
>degrees of freedom for the intercept.  How can I obtain this?
>
>Thank you for your help ahead of time.
>
>Jacob
>
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>
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