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3 results for “from:david detullio”

[R-meta] dichotomizing variables in psychmeta
david detullio · Apr 25, 2020 · r-sig-meta-analysis

Hi all, I am wanting to do a meta-analysis using psychmeta in r where I correct for dichotomization. In psychmeta, I notice that there is not a correction function for dichotomization within the ma_r command. So, would I...

[R-meta] Inverting negative correlations
david detullio · Jan 6, 2021 · r-sig-meta-analysis

Hello all, I want to include correlation coefficients in a random-effects model for meta-analysis. If the majority of the correlations are positive, could I use the absolute values of any negative correlations if such correlations would have been...

[R-meta] error for meta-regression with continuous moderator
david detullio · Oct 28, 2021 · r-sig-meta-analysis

Hello all, I am performing a mixed-effects meta-regression of proportions with a continuous moderator. I receive the error message: "Ratio of largest to smallest sampling variance extremely large. May not be able to obtain stable results." I saw...

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