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List: r-sig-mixed-models
Subject: Re: [R-sig-ME] Calculating SE from GLMM results (using glmer{lme4})
From: Ben Bolker <bolker () ufl ! edu>
Date: 2009-09-27 17:08:20
Message-ID: 4ABF9C04.80600 () ufl ! edu
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Raldo Kruger wrote:
> Hi Ben,
>
> Thanks for your help. See my responses below (~~~).
>
> Regards,
> Raldo
[snip]
>
>
>> It's also
>> worth considering whether you are really getting reliable answers based
>> on only 4 sites -- I would also try this with Site as a fixed effect
>> and see whether the answers differ considerably. (I know that,
>> philosophically, Site and Year are both random effects, and you may
>> run into trouble with reviewers who are used to classical ANOVA
>
> ~~~ I've been using glmer, and it doesn't seem to accept a model with
> no random factors. Is ~~~that true, and if not, how can i write the
> model without a random factor so that it is ~~~accepted by glmer?
If you have a model with no random factors, then glm() should work
fine (although be aware that the likelihoods/AIC values will not be
directly comparable between glm() and glmer())
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