[R-meta] Meta-analysis on positive and negative outcomes: Is it correct to take the reversed r values?

[Gladys Barragan-Jason]

Dear all,
I have a question about taking the reversed values when combining different
proxies of one factor. For instance, if you're doing  a meta-analysis on
the impact of X on Y where Y is  mental health and you have several
measures of Y such as depression (r= -0.4) , stress (r=-0.1) and emotional
balance (r=+0.5-) and positive moods (r=+0.2), is it correct to transform
(take to reversed values) for "negative health" (r=+0.4 and r=0.1) and
pooled everything together or is it better to make to different
meta-analysis (one on positive and one on negative effects), or maybe both?
Thanks a lot for your response.
Best,
Gladys

-- 

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Gladys Barragan-Jason, PhD.  Website
<https://sites.google.com/view/gladysbarraganjason/home>

Station d'Ecologie Théorique et Expérimentale (SETE)

CNRS de Moulis

[image: image.png][image: image.png]

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