[R-sig-ME] Effect size for lmer and glmer

[Highland Statistics Ltd]

>
> ------------------------------
>
> Message: 2
> Date: Thu, 9 Oct 2014 06:47:06 +0000
> From: Hamada Elsayed Ali <medo_botany at hotmail.com>
> To: Mixed Models <r-sig-mixed-models at r-project.org>
> Subject: [R-sig-ME] Effect size for lmer and glmer
> Message-ID: <DUB119-W2D4DF16DB6FF9470168B69CA00 at phx.gbl>
> Content-Type: text/plain; charset="UTF-8"
>
> Dear All,
>
> I am trying to calculate the effect size from lmer and glmer models that looks like that:
>
> q0100 <- lmer(q0 ~ Management + Width + NonCrop100 +
>                  Management * NonCrop100 + (1 | Plot.No), Alpha)
>
>
> Pres100<-glmer(Present ~ Management +
>                   Management : status +
>                   Management : NonCrop100 +
>                   status +
>                   NonCrop100 : status +
>                   NonCrop100 +
>                   Management : Dispersal +
>                   Dispersal +
>                   NonCrop100 : Dispersal +
>                   (1|Plot.No),
>                 family=binomial, data=Presence)
>
> Can you help me to calculate the effect size of the fixed variables and the interactions from the above mentioned models.

Dear Hamada,

A Google search on "effect size glmm" gives about 20 pdf files on the 
first 2 pages alone. I would start with:

http://onlinelibrary.wiley.com/doi/10.1111/j.2041-210x.2012.00261.x/full

>   I do have many other models that I like to compare all of them according to the effect size of each of which on the diversity measures, abundance and p/a data.
You mean diversity measures, abundances and p/a data calculated from the 
same data? Have a look at:
www.uvm.edu/~ngotelli/Bio%20264/Hurlbert.pdf



Kind regards,

Alain



>
> Thanks,
>
> Hamada Elsayed Ali
> PhD Candidate in Biogeographical Modelling,
> University of Bayreuth
> Universitaetsstr. 30
> 95440 Bayreuth, Germany
> Email: hamada.ali at uni-bayreuth.de
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> End of R-sig-mixed-models Digest, Vol 94, Issue 9
> *************************************************
>

-- 
Dr. Alain F. Zuur

First author of:
1. Beginner's Guide to GAMM with R (2014).
2. Beginner's Guide to GLM and GLMM with R (2013).
3. Beginner's Guide to GAM with R (2012).
4. Zero Inflated Models and GLMM with R (2012).
5. A Beginner's Guide to R (2009).
6. Mixed effects models and extensions in ecology with R (2009).
7. Analysing Ecological Data (2007).

Highland Statistics Ltd.
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