E1793. Correlation Between Research Interdisciplinarity and National Institutes of Health Grant Funding of U.S. Radiology Departments
  1. Matthew Petterson; University of Wisconsin Hospital and Clinics
  2. Colin Longhurst; University of Wisconsin - Madison School of Medicine and Public Health
  3. John-Paul Yu; University of Wisconsin - Madison School of Medicine and Public Health
National Institutes of Health (NIH) grant funding is intended to support the most promising and impactful biomedical research currently being performed. However, little is known about the reach of supported research. To understand the link between NIH funding and cross-disciplinary implications of research performed at funded institutions, comparison was made between interdisciplinarity and funding amounts.

Materials and Methods:
All institutions receiving NIH funding for grants in the category “Radiation-Diagnostic/Oncology” in the year 2019 were identified [1]. All articles published by authors from the corresponding institutions within the Web of Science [2] category “Radiology, Nuclear Medicine, and Medical Imaging” in the years 2010-2014 were identified. These articles were then analyzed to create a categorized report of all subsequent citing publications, utilizing an approach with yielded DIV* diversity, a statistical metric of interdisciplinarity. Publication interdisciplinarity and NIH funding were then compared.

Sixty-five institutions received NIH grants in the examined category. A total of 53,784 articles were published by the included departments in the corresponding Web of Science category within the studied time period, which were subsequently cited a total of 927,520 times. A positive correlation was found between DIV* diversity and NIH funding (? = 0.505), driven predominantly by institutions receiving between $5 million and $10 million in grant funding. However, for institutions receiving less than $5 million or greater than $10 million in funding, this correlation was not noted.

At intermediate funding levels, increased NIH grant funding was associated with increased interdisciplinarity of research performed at funded institutions. However, institutions with low or high levels of funding produced research with widely varying degrees of interdisciplinarity, suggestive that some institutions are more successful at producing impactful research. Efforts should be made to understand and emulate the approaches of these institutions.