Abstract
The International Committee of Medical Journal Editors requires authors to disclose all financial conflicts of interest (COI) that can be perceived as influencing the related trials. Undisclosed financial COI may influence the perception of the authors' scientific impartiality and erode the public trust in the reported results. Data regarding completeness of COI disclosure in high-impact–factor general medicine journals are limited. We compared payments disclosed by US-based physicians who were first or last authors of clinical drug trials published between August 2016 and August 2018 in the New England Journal of Medicine, JAMA, and Lancet, to payments reported by industry to the Centers for Medicare & Medicaid Services Open Payments Database. Of 247 included authors, 198 (80%) have not disclosed some or all received payments. The median undisclosed sum was $8409 (US Dollars) (interquartile range [IQR] $123 to $44,890). Most authors (n=170, 69%) have received more than $10,000 per year (median $120,403, IQR $58,905 to $242,014). The median undisclosed sum for these authors was $26,530 (IQR $7462 to $71,562). Median undisclosed sums for authors of papers from studies performed with and without industry funding were $20,899 (IQR $4191 to $59,883) and $149 (IQR $0 to $3276), respectively. In 10 (8%) of 125 industry-funded trials, the first or last author had not disclosed personal payments from the study sponsor (median $9741, IQR $4508 to $101,484). These findings could raise concerns about the authors' equipoise toward the trial results and influence the public perception of the credibility of reported data. Health care professionals, reviewers, and journal editors should demand more transparent reporting of financial COI.
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