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	• Author • Cochrane • 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?	N/A
Are the methods of the article described in enough detail to replicate the study?	Yes