According to ARRS’ American Journal of Roentgenology (AJR), nearly half (47.7%) of the research articles published in major radiology journals declared funding—a proportion that has increased from 17% of articles in 1994 and 26.9% published between 2001 and 2010.
“Most funded articles received support from federal sponsors or nonprofit foundations, whereas only a minority of funded articles were supported by private industry,” explained first author Rayan H.M. Alkhawtani from the department of radiology, nuclear medicine, and molecular imaging at University Medical Center Groningen in The Netherlands.
And as Alkhawtani et al. concluded, “funding was not associated with a higher citation rate.”
The Dutch team included a total of 600 consecutive original research articles published between January and October 2016 in three large journals: AJR, Radiology, and European Radiology. Using linear regression analysis to ascertain the association between research funding and citation rate, adjustments were made for the following seven factors:
Main Characteristics of Included Research Articles
Finding that funding was declared in 286 of 600 (47.7%) included articles, the authors of this AJR research article identified the six most significant funding sources:
“Articles with first authors whose continent of origin was Europe (p < 0.001), vascular and interventional radiology articles (p < 0.001), and articles published in AJR (p < 0.001) were significantly more frequently unfunded than funded,” Alkhawtani and colleagues noted.
Meanwhile, the team noted that articles published in Radiology were significantly more frequently funded (p < 0.001).
Ultimately, citation rate was not significantly different between funded and unfunded articles (p = 0.166), and in the adjusted linear regression analysis, funding was not significantly associated with citation rate (β coefficient, −0.31; 95% CI, −3.27 to 2.66; p = 0.838).Back To Top
Study: Radiology Research Funding Increases, Not Linked to Citation Rate. Appl Radiol.