Do Author Conflicts of Interest and Industry Sponsorship Influence Outcomes of Systematic Reviews and Meta-Analyses Regarding Glaucoma Interventions? A Cross-sectional Analysis

Ref ID 797
First Author A. Wise
Journal JOURNAL OF GLAUCOMA
Year Of Publishing 2021
URL https://www.ingentaconnect.com/content/wk/jglau/2021/00000030/00000004/art00019
Keywords • Disclosure
• Sponsorship bias
• Allegiance
• Author
• Ophthalmology
• Non-Cochrane reviews
Problem(s) • Conflict of interest statement or disclosures for review authors missing
• Financial conflicts of interest of review authors
Article Type Empirical
Article Subtype Meta-epidemiological analysis
First Author Country United States
Aim To assess whether authors with a conflict of interest were more likely to reach favourable conclusions from systematic reviews of glaucoma indexed in MEDLINE and Embase between September 1, 2016 and June 2, 2020.
Level of Investigation Analytical
Summary of Findings From 26 included systematic reviews of glaucoma indexed in MEDLINE and Embase between September 1, 2016 and June 2, 2020. 9 (35%) were conducted by at least 1 author with an undisclosed conflict of interest. Of those 9, 3 (33%) reported results favouring the treatment group, and 5 (56%) reported conclusions favouring the treatment group. Of the 17 systematic reviews with no conflicted authors, 1 (6%) reported results favouring the treatment group, and 2 (12%) reported conclusions favouring the treatment group. The Fisher exact tests demonstrated that these differences held a statistically significant association between author conflicts and the favourability of the reviews’ conclusions toward the treatment group (P=0.04).
Number of systematic reviews included 26
Number of eligible systematic reviews assessed 26
Treatment impacted Yes
Treatment impacted description Aimed to determine whether the presence of 1 of more conflicts was associated with more favourable results and conclusions in systematic reviews of glaucoma interventions.
Interpretation impacted Yes
Interpretation impacted description The study found that systematic reviews conducted by 1 or more authors with conflicts of interest were more likely than those with no conflicted authors to draw favourable conclusions about the investigated intervention.