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The Stata Journal
Volume 8 Number 4: pp. 493-519



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Meta–regression in Stata

Roger M. Harbord
Department of Social Medicine
University of Bristol, UK
roger.harbord@bristol.ac.uk
Julian P. T. Higgins
MRC Biostatistics Unit
Cambridge, UK
julian.higgins@mrc-bsu.cam.ac.uk
Abstract.   We present a revised version of the metareg command, which performs meta-analysis regression (meta-regression) on study-level summary data. The major revisions involve improvements to the estimation methods and the addition of an option to use a permutation test to estimate p-values, including an adjustment for multiple testing. We have also made additions to the output, added an option to produce a graph, and included support for the predict command. Stata 8.0 or above is required.
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