Re: [R] lmer and method call

From: Dieter Menne <dieter.menne_at_menne-biomed.de>
Date: Sat, 1 Dec 2007 16:08:28 +0000 (UTC)

Douglas Bates <bates <at> stat.wisc.edu> writes:

(lmer)

> The default is PQL, to refine the
> starting estimates, followed by optimization of the Laplace
> approximation. In some cases it is an advantage to suppress the PQL
> iterations which can be done with one of the settings for the control
> argument.

I had found out the hard way that it is often better to let PQL play the game rather loosely. Yet I never dared to tell someone, for fear the approximation could end up in the wrong slot,

Any rules (beside trying variants) if I can trust such a result?

Dieter



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