Erratum: Robust variance estimation in meta-regression with dependent effect size estimates
Larry Vernon Hedges, Elizabeth Tipton, Matthew C. Johnson · Research Synthesis Methods · 2010
On pages 47–48, under the heading ‘Dependence Introduced by Study Level Effects’, the estimators of τ2 and ω2 given are incorrect. The correct estimators are as follows. Finally, please note that the R functions given in Appendix B contain several typesetting errors (which unfortunately we did not catch). We also did not include an R function for estimating the standard errors in a hierarchical model. In order to avoid new typographical errors, we have included correct (and updated) versions of both functions on our website, http://www.northwestern.edu/ipr/qcenter/RVE-meta-analysis.html.