Abstract
ObjectiveDetailed information on potential conflict of interest (COI) and sponsorship is pivotal for the adequate understanding and appropriate interpretation of the reported study results. The reporting of COI and sponsorship and any potential associations with study characteristics in publications of all dental journals with impact factor was examined. MethodsThe Web of Science database was searched, in March 2019, for articles published from February 28, 2018 to March 1, 2019. A random a sample of 1000 articles in English was selected. Two independent authors extracted the following article characteristics: type of article, dental field, number of authors, country/continent affiliation of the first author, dental journal, journal impact factor, number of citations, Altmetric score, type of COI and sponsorship. Disagreements during data extraction were resolved by discussion and consensus. Descriptive statistics were calculated for the selected variables and multinomial logistic regression was implemented to assess the association between COI, sponsorship, and the other variables. Results3% of dental publications declared a COI, whereas in 32.5% of publications the presence of COI was unclear. The most prevalent type of COI was financial (n = 26). Non-profit organizations funded 37.2% of the articles, while the sponsorship for 40.4% articles was unclear. Regression analysis showed that publications reporting COI had greater odds of receiving sponsorship from for-profit sources. ConclusionsSponsorship and COI information seem to be underreported in dental journals. Efforts should be made by authors, journals, and publishers to provide more comprehensive information to allow the reader to understand the potential impact of sponsorship and COI on study results. Clinical significanceThe underreporting of COI and sponsorship in dental articles hinders the interpretation of findings by readers. The results of the present study bring attention to this important topic as well as guide further improvements on the reporting of COI and sponsorship in dental articles.
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