A tool to assess the quality of a meta-analysis

Julian P.T. Higgins, Peter W. Lane, Betsy Anagnostelis, Judith Anzures-Cabrera, Nigel F. Baker, Joseph C Cappelleri, Scott Haughie, Sally Hollis, Steff Lewis, Patrick Moneuse, Anne Whitehead

Research output: Contribution to journalArticlepeer-review

Abstract

Background
Because meta-analyses are increasingly prevalent and cited in the medical literature, it is important that tools are available to assess their methodological quality. When performing an empirical study of the quality of published meta-analyses, we found that existing tools did not place a strong emphasis on statistical and interpretational issues.

Methods
We developed a quality-assessment tool using existing materials and expert judgment as a starting point, followed by multiple iterations of input from our working group, piloting, and discussion. After having used the tool for our empirical study, agreement for four key items in the tool was measured using weighted kappa coefficients.

Results
Our tool contained 43 items divided into four key areas (data sources, analysis of individual studies, meta-analysis methods, and interpretation), and each area ended with a summary question. We also produced guidance for completing the tool. Agreement between raters was fair to moderate.

Conclusions
The tool should usefully inform subsequent initiatives to develop quality-assessment tools for meta-analysis. We advocate use of consensus between independent raters when assessing statistical appropriateness and adequacy of interpretation in meta-analyses. Copyright © 2013 John Wiley & Sons, Ltd.
Original languageEnglish
Pages (from-to)351-366
Number of pages16
JournalResearch Synthesis Methods
Volume4
Issue number4
Early online date18 Oct 2013
DOIs
Publication statusPublished - Dec 2013

Keywords

  • meta-analysis
  • systematic reviews
  • quality
  • bias

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