Sterne, Jonathan A.C.; Harbord, Roger M. - In: Stata Journal 4 (2004) 2, pp. 127-141
Funnel plots are a visual tool for investigating publication and other bias in meta-analysis. They are simple scatterplots of the treatment effects estimated from individual studies (horizontal axis) against a measure of study size (vertical axis). The name "funnel plot" is based on the...