Message-ID: <7c3095d3-2881-bf30-d81a-218682208966@imbi.uni-freiburg.de>
Date: 2021-01-28T11:35:05Z
From: Gerta Ruecker
Subject: [R-meta] Accounting for baseline differences in meta-analysis
In-Reply-To: <CAGtj4DwYTuuDzxrtTtXq0bkYz3uCXJRgucVYw1FReSZCec82kA@mail.gmail.com>
Dear Gladys,
An obvious approach would be to take the post values (or, equivalently,
the change scores) as an outcome, and the baseline values as a covariate
in a metaregression model.
Best,
Gerta
Am 28.01.2021 um 10:49 schrieb Gladys Barragan-Jason:
> Dear all,
> I would like to know how to take the baseline difference into account
> in meta-analysis of the impact of a treatment on experimental data in
> which the baseline of the control group is different from the baseline
> of the treatment.
> For now, I am using the post- means and SD of the control and the
> treatment group (and the rma.mv <http://rma.mv> function) and also the
> pre-post values of the treatment group but I don't think this is
> correct and I am not sure how to proceed.
> Any advice?
> Thanks a lot in advance.
> Best regards,
> Gladys
>
> --
>
> ------------------------------------------
>
> Gladys Barragan-Jason, PhD. ?Website
> <https://sites.google.com/view/gladysbarraganjason/home>
>
> Station d'Ecologie Th?orique et Exp?rimentale (SETE)
>
> CNRS de Moulis
>
> image.pngimage.png
>
>
>
>
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