Document Detail

Meta-analysis: Fact or fiction? How to interpret meta-analyses.
MedLine Citation:
PMID:  21375365     Owner:  NLM     Status:  Publisher    
Abstract Objectives. Widespread use of increasingly complex statistical methods makes it ever more challenging to adequately assess the results reported and conclusions drawn in meta-analytic research. This paper aims to identify potential fallacies by in-depth examination of recent publications on mood disorders. Methods. Three meta-analyses were selected based on availability of data and representativeness of methods employed. By means of detailed re-analysis, several widespread methodological problems were identified, and the example data were used to illustrate and discuss them. Results. General points addressed include clear formulation of the research question, choice of effect size measures, and general choice of model. Data quality problems like missing data and publication bias are discussed along with methods to deal with them. Furthermore, aspects of meta-analytic modelling like the use of fixed or random effects, data aggregation, as well as the use of subgroups are explained, and issues of excessive complexity and data dredging pointed out. Finally, the benefit of diagnostic tools like confidence bands and the importance of transparency regarding data and methodology for the interpretation of meta-analytic results are highlighted. Conclusions. Practically relevant quality criteria for readers to bear in mind when dealing with meta-analytic publications are summarized in a ten point checklist.
Wolfgang Huf; Klaudius Kalcher; Gerald Pail; Michaela-Elena Friedrich; Peter Filzmoser; Siegfried Kasper
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-4
Journal Detail:
Title:  The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry     Volume:  -     ISSN:  1814-1412     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101120023     Medline TA:  World J Biol Psychiatry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.
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