Prevalence of honorary and ghost authorship in Cochrane reviews

Ref ID 701
First Author G. Mowatt
Journal JAMA
Year Of Publishing 2002
URL https://pubmed.ncbi.nlm.nih.gov/12038907/
Keywords Cochrane
Author
Allegiance
Problem(s) Weaknesses identified in some Cochrane reviews
Guest / gift / ghost authorship
Number of systematic reviews included 362
Summary of Findings 39% of the 362 included Cochrane reviews had evidence of honorary authors (named as authors but not meeting all 3 ICMJE criteria). 9% had evidence of ghost authors (most commonly a member of the Cochrane editorial team) and 2% had evidence of both honorary and ghost authors.
Did the article find that the problem(s) led to qualitative changes in interpretation of the results? Not Applicable
Are the methods of the article described in enough detail to replicate the study? Yes