Hi. When conducting a meta-analysis, how to calculate the effect size of the whole population (all the studies) when we have 25 correlational studies (whose effect size is r) and 13 experimental studies(whose effect size is estimated by Cohen's d )?
How to combine different effect size?
Holger Steinmetz
Hi,
there are calculators that transform a Cohen's d value into r, e.g., https://www.escal.site/
That being said, you should definitely also analyse them separately, as the designs strongly differ. One could question at all whether a common effect site is useful at all.
Hope that helps
Holger
2 votes
1 thanks
- Badges
- Science topic
- Similar topics
- Filing
More Mohamed Mejri's questions See All
Similar questions and discussions