Dear all,

As information on R2 from mixed models is regularly requested over this
llist I thought I would draw peoples attention to a paper and an attempt to
code a function to derive R2 for mixed models.

The paper is:
Shinichia, N., and H. Schielzeth. 2013. A general and simple method for
obtaining R2 from generalized linear mixed-effects models. Methods in
Ecology and Evolution 4(2): 133-142.

The author of the sample(Ecology) blog has created a function for lmer and
lme models based on the paper. It probably wont work on development version
of lme4 though as the function relies on the mer class and uses @ once or
twice, but these might be easy enough to fix. There might also be problems
with the mer part of the code if you only have a single random effect, but
thats also easy to fix (its already done for lme models).
LINK:
https://jslefche.wordpress.com/2013/03/13/r2-for-linear-mixed-effects-models/


I hope this comes in useful!!

Cheers,

Alan

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Email: aghaynes@gmail.com
Mobile: +41763389128
Skype: aghaynes

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