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

Am 29.03.2022 um 12:28 schrieb Viechtbauer, Wolfgang (SP) <wolfgang.viechtbauer at maastrichtuniversity.nl>:

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 at r-project.org] On
Behalf Of Lukasz Stasielowicz
Sent: Monday, 28 March, 2022 19:26
To: r-sig-meta-analysis at 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
Osnabr?ck University
Institute for Psychology
Research methods, psychological assessment, and evaluation
Seminarstra?e 20
49074 Osnabr?ck (Germany)