Methodological quality is underrated in systematic reviews and meta-analyses in health psychology

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Abstract

© 2017 Elsevier Inc. Objectives In this paper, we compile and describe the main approaches proposed in the literature to include methodological quality (MQ) or risk of bias (RoB) into research synthesis. We also meta-review how the RoB of observational primary studies is being assessed and to what extent the results are incorporated in the conclusions of research synthesis. Study Design and Setting Electronic databases were searched for systematic reviews or meta-analyses related to health and clinical psychology. A random sample of 90 reviews published between January 2010 and May 2016 was examined. Results A total of 46 reviews (51%) performed a formal assessment of the RoB of primary studies. Only 17 reviews (19%) linked the outcomes of quality assessment with the results of the review. Conclusion According to the previous literature, our results corroborate the lack of guidance to incorporate the RoB assessment in the results of systematic reviews and meta-analyses. Our recommendation is to appraise MQ according to domains of RoB to rate the degree of credibility of the results of a research synthesis, as well as subgroup analysis or meta-regression as analytical methods to incorporate the quality assessment.
Original languageEnglish
Pages (from-to)59-70
JournalJournal of Clinical Epidemiology
Volume86
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Meta-analysis
  • Meta-review
  • Methodological quality
  • Research synthesis
  • Risk of bias
  • Systematic review

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