David B. Wilson, PhD, George Mason University
Version date: 2023.11.27
About: This is a web-based effect-size
calculator. It is designed to facilitate the computation of
effect sizes for meta-analysis. Four effect-size types can be computed
from various input data: the standardized mean difference (Cohen’s
d and Hedges’ g), the odds ratio, the risk ratio, and
the correlation coefficient. This calculator is a companion to the
2001 book Practical Meta-analysis by Mark W. Lipsey and David
B. Wilson.
How to Use: From the menu above, first, select the effect size
index type of interest. Next, select the menu option that fits the
type of data you have available for computing the effect size. Then
enter the necessary data. Finally, click the “Compute” button to
calculate the effect size.
How to cite:
Wilson, D. B. (2023). Practical meta-analysis effect size calculator (Version 2023.11.27).
This work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.