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Resources and networking for those who conduct or interpret meta-analyses related to any phenomenon that is gauged in multiple studies.

Michael Köhler
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  • Bielefeld
  • Germany
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Relative high weights in pre-post scores studies

Hi there,I want to start again a discussion about a problem i already had a few years ago:I'm working on a meta-analysis where i combine different designs: independent groups (treatment and control…Continue

Started Apr 2

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Michael Köhler posted a discussion

Relative high weights in pre-post scores studies

Hi there,I want to start again a discussion about a problem i already had a few years ago:I'm working on a meta-analysis where i combine different designs: independent groups (treatment and control group) on the one hand and only dependent pre post without control group on the other. For both study types I computed hedges' g according to Borenstein et al. (2009).As prescribed for studies that use pre post scores I used the correlation between pre- and post-scores to compute the standard…See More
May 26

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