Hedge’s G

Steve Simon

2005-05-13

Categories: Blog post Tags: Systematic overviews

Someone asked me today about Hedge’s G. I had never heard of it before, but if you do a web search, you will find

which defines it as a variation on Cohen’s D that corrects for biases due to small sample sizes. The formula for Cohen’s D is well known:

HedgesG1.gif not found.

and you adjust this value to get Hedge’s G with the formula:

HedgesG2.gif not found.

You can find an earlier version of this page on my original website.