Re: [R] lmer, p-values and all that

From: Marc Schwartz <MSchwartz_at_mn.rr.com>
Date: Sat 20 May 2006 - 09:54:18 EST

On Fri, 2006-05-19 at 17:44 -0500, Frank E Harrell Jr wrote:
> Douglas Bates wrote:
> > Users are often surprised and alarmed that the summary of a linear
> . . . .
> Doug,
>
> I have been needing this kind of explanation. That is very helpful.
> Thank you. I do a lot with penalized MLEs for ordinary regression and
> logistic models and know that getting sensible P-values is not
> straightforward even in that far simpler situation.
>
> Frank

I would like to echo Frank's comments and say "Thanks" to Doug for taking the time to provide this post.

I would also like to suggest that this issue has indeed become a FAQ and would like to recommend that an addition to the main R FAQ be made (wording TBD) but along the lines of:

  Why are p values not displayed when using lmer()?

The response could be:

  Doug Bates has kindly provided an extensive response in a post to the   r-help list, which can be reviewed at:

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

This might save Doug, Harold and Spencer (I am probably missing some others here) keystrokes in the future... :-)

Best regards,

Marc Schwartz



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