[R-meta] rule of thumb miminum number of studies per factor level meta-regression

[Viechtbauer, Wolfgang (SP)]

And to go along with this:

https://cran.r-project.org/package=metapower

Also, in case you are dealing with dependent effect sizes, this is also relevant:

https://www.jepusto.com/publication/power-approximations-for-dependent-effects/

Best,
Wolfgang

>-----Original Message-----
>From: R-sig-meta-analysis [mailto:r-sig-meta-analysis-bounces using r-project.org] On
>Behalf Of Lukasz Stasielowicz
>Sent: Monday, 28 March, 2022 19:26
>To: r-sig-meta-analysis using r-project.org; Lena Pollerhoff
>Subject: Re: [R-meta] rule of thumb miminum number of studies per factor level
>meta-regression
>
>Dear Lena,
>
>as Wolfgang has pointed out, it's a rather complex topic.
>In general, power is rather low in moderator analyses and depends on
>several factors.
>You'll find a short introduction in the following book (e.g. Chapter 6):
>Pigott, T. (2012). Advances in meta-analysis. Springer Science &
>Business Media. https://doi.org/10.1007/978-1-4614-2278-5
>
>Since you're working in Germany you can probably access Springer ebooks
>for free.
>
>Best,
>Lukasz
>--
>Lukasz Stasielowicz
>Osnabrück University
>Institute for Psychology
>Research methods, psychological assessment, and evaluation
>Seminarstraße 20
>49074 Osnabrück (Germany)