Non-Cochrane vs. Cochrane reviews were twice as likely to have positive conclusion statements: cross-sectional study

Ref ID 601
First Author A. C. Tricco
Journal JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing 2009
URL https://www.jclinepi.com/article/S0895-4356(08)00227-8/fulltext
Keywords Cochrane
Spin
Influence
General medical
Team
Non-Cochrane reviews
Problem(s) Cochrane reviews more rigorous/higher quality than non-Cochrane reviews
Number of systematic reviews included 296
Summary of Findings Non-Cochrane reviews were significantly more likely to contain positive conclusions than Cochrane reviewers. A higher proportion of Cochrane reviews had indeterminate conclusions,
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