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st: Clarification of metatrim use in confunnel SJ article

From   "Palmer, T.M." <>
To   "''" <>
Subject   st: Clarification of metatrim use in confunnel SJ article
Date   Wed, 25 Jun 2008 14:55:05 +0100

This is to clarify a point in my Stata Journal article on contour enhanced funnel plots for meta-analysis (latest edition, pages 242-254).

I commented that when the metatrim command was run on the magnesium therapy meta-analysis that no studies were filled (page 251). However, in this example it was of interest to investigate whether studies with positive outcomes were missing. I used metatrim with its default options but this situation requires the use of metatrim's -flip- option (available in version 1.0.5). When metatrim was applied with the -flip- option to the magnesium therapy meta-analysis between 6 and 8 studies were filled depending on the options used.

Thanks to Tom Steichen for spotting this.

Best regards,

Tom Palmer

PhD student,
Dept. Health Sciences,
University of Leicester

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