Updated tests for small-study effects in meta-analyses
AbstractThis article describes an updated version of the metabias command, which provides statistical tests for funnel plot asymmetry. In addition to the previously implemented tests, metabias implements two new tests that are recom- mended in the recently updated Cochrane Handbook for Systematic Reviews of Interventions (Higgins and Green 2008). The ﬁrst new test, proposed by Harbord, Egger, and Sterne (2006, Statistics in Medicine 25: 3443–3457), is a modiﬁed ver- sion of the commonly used test proposed by Egger et al. (1997, British Medical Journal 315: 629–634). It regresses Z/√V against √V , where Z is the efficient score and V is Fisher’s information (the variance of Z under the null hypothesis). The second new test is Peters’ test, which is based on a weighted linear regression of the intervention effect estimate on the reciprocal of the sample size. Both of these tests maintain better control of the false-positive rate than the test proposed by Egger at al., while retaining similar power. Copyright 2009 by StataCorp LP.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoArticle provided by StataCorp LP in its journal Stata Journal.
Volume (Year): 9 (2009)
Issue (Month): 2 (June)
Contact details of provider:
Web page: http://www.stata-journal.com/
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Tseday Jemaneh Mekasha & Finn Tarp, 2013.
"Aid and Growth: What Meta-Analysis Reveals,"
Journal of Development Studies,
Taylor & Francis Journals, vol. 49(4), pages 564-583, April.
- Wolfgang Viechtbauer, . "Conducting Meta-Analyses in R with the metafor Package," Journal of Statistical Software, American Statistical Association, vol. 36(i03).
- Nick Freemantle, 2008. "Biostatistical aspects for the use of evidence based medicine in health technology assessment," The European Journal of Health Economics, Springer, vol. 9(1), pages 31-43, November.
- Sevigny, Eric L. & Fuleihan, Brian K. & Ferdik, Frank V., 2013. "Do drug courts reduce the use of incarceration?: A meta-analysis," Journal of Criminal Justice, Elsevier, vol. 41(6), pages 416-425.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Christopher F. Baum) or (Lisa Gilmore).
If references are entirely missing, you can add them using this form.