Most overviews of Cochrane reviews neglected potential biases from dual authorship

Ref ID 613
First Author R. B. Buchter
Journal JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing 2016
URL https://www.jclinepi.com/article/S0895-4356(16)30095-6/fulltext
Keywords Cochrane
Protocols
Author
Transparency
Allegiance
Influence
General medical
Problem(s) Non-financial conflicts of interest of review authors
Number of systematic reviews included 20
Summary of Findings In 18 of 20 (90%) of included overviews, at least one of the included reviews was affected by dual (co-) authorship. In 11 of 18 affected overviews (61%), dual (co-) authorship was mentioned under declarations of interest. In 5 of 18 overviews (28%), it was considered in the limitations section.
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