Cochrane has not consistently followed the COPE guidelines

Ref ID 687
First Author H. Hemila
Journal EUROPEAN JOURNAL OF CLINICAL INVESTIGATION
Year Of Publishing 2020
URL https://dx.doi.org/10.1111/eci.13216
Keywords • Vitamins and supplements
• Cochrane
• Open data
• Transparency
• Error
Problem(s) • Weaknesses identified in some Cochrane reviews
• Errors in effect estimate calculations or data synthesis
• Data extraction errors and double counting
Article Type Editorial
Article Subtype Comment/letter
First Author Country Finland
Aim A letter highlighting how the author's concerns about a Cochrane review about vitamin C supplementation for asthma were handled by the Cochrane editorial board.
Level of Investigation Descriptive
Summary of Findings Data extraction and data synthesis errors highlighted by the author, were subsequently replaced in the Cochrane review. However the author's comment regarding these errors and the original erroneous figures from review were removed from the scientific record of the Cochrane library.
Number of systematic reviews included 1
Number of eligible systematic reviews assessed 1
Treatment impacted No
Treatment impacted description
Interpretation impacted Not Applicable
Interpretation impacted description