We are pleased to publish the Meta-Analysis Effect Size Calculator in our Resource Center, as a new tool for systematic reviewers. The calculator has been developed by David B. Wilson, Associate Professor and Chair of the Criminology, Law and Society Department at George Mason University. Wilson is also the Editor of Campbell’s Crime and Justice Group.
The effect size calculator is web based and 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, the correlation coefficient, the odds-ratio, and the risk-ratio.