[R-meta] Assessing publication bias from multilevel modelling

[Michael Dewey]

Dear Célia

As far as I can see regtest can accept the yi, vi or sei parameters so 
you should be OK there. I do not think the HC method is going to be easy 
to do if it is even possible.

Michael

On 14/02/2018 16:14, Célia Sofia Moreira wrote:
> Hi!
> 
> I am studying a pretest-posttest controlled design and I'm using metafor
> and clubSandwich packages. In some papers, I collected more than one effect
> size (from the same study sample). For this reason, I did multilevel
> modelling using rma.mv function, with
> random = ~ 1 |Study, struct = "UN".
> 
> I would like to perform a publication bias analysis, using funnel plots,
> tests for funnel plots asymmetry, and Hemni and copas (HC) model. However,
> since I am using rma.mv function, I can only depict (multilevel) funnel
> plots; unfortunately, tests for funnel plots asymmetry and HC model are not
> available for rma.mv....
> 
> Do you know any alternative way to test the asymmetry of my "multilevel"
> funnel plots, as well as to compare with the HC modelling?
> 
> If not, can anybody please suggest other methods to assess publication bias
> in this multilevel case?
> 
> Thank you very much,
> celia
> 
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-- 
Michael
http://www.dewey.myzen.co.uk/home.html