Grey Literature in Meta-Analyses | RDL Research Database

Abstract

Meta-analyses that exclude grey literature likely (a) over-represent studies with statistically significant findings, (b) inflate effect size estimates, and (c) provide less precise effect size estimates than meta-analyses including grey literature. Meta-analyses should include grey literature to fully reflect the existing evidential base and should assess the impact of methodological variations through moderator analysis.

Keywords

Grey literatureMeta-analysisSystematic reviewModerationSample size determinationPsychologyStatisticsMEDLINESocial psychologyMedicineMathematicsPolitical science

Affiliated Institutions

Columbia College - Missouri US

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Publication Info

Year: 2003
Type: review
Volume: 52
Issue: 4
Pages: 256-261
Citations: 381
Access: Closed

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APA Style

                            
                                
                                    Vicki S. Conn, 
                                
                                    Jeffrey C. Valentine, 
                                
                                    Harris Cooper
                                
                                et al.
                            
                            (2003). 
                            Grey Literature in Meta-Analyses. 
                            Nursing Research
                            , 52
                            (4)
                            , 256-261.
                            https://doi.org/10.1097/00006199-200307000-00008
                        

Identifiers

DOI: 10.1097/00006199-200307000-00008