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Morisawa F, Nishizaki Y, Devos P, Yanagisawa N, Matsuyama K, Homma Y, Ueda R, Sekine M, Daida H, Minamino T, Sanada S. The association between research funding status and clinical research papers’ citation impact in Japan: A cross-sectional bibliometric study. Front Med (Lausanne) 2022; 9:978174. [PMID: 36341255 PMCID: PMC9626813 DOI: 10.3389/fmed.2022.978174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Studies have not sufficiently clarified the differences in citation impact between funded and non-funded clinical research papers. Hence, this study seeks to evaluate the relation between research funding status and clinical research papers’ citation impact in different research fields using multiple evaluation indices. Methods In this cross-sectional bibliometric study, clinical research papers published by core clinical research hospitals in Japan were compared retrospectively in terms of times cited (TC), category normalized citation impact (CNCI), citation percentile (CP), journal impact factor (JIF), the Software to Identify, Manage, and Analyze Scientific Publications (SIGAPS) category, and whether they were the funded clinical research. The association between research funding status or the SIGAPS category and CNCI ≥ 2 was analyzed using logistic regression analysis. Results 11 core clinical research hospitals published 553 clinical research papers, of which 120 were non-funded and 433 were funded (public institution-funded and industry-funded). The study found that funded clinical research papers (public institution-funded and industry-funded) had significantly higher TC, CNCI, CP, and JIF than non-funded ones [TC: 8 (3–17) vs. 14 (8–31), p < 0.001; CNCI: 0.53 (0.19–0.97) vs. 0.87 (0.45–1.85), p < 0.001; CP: 51.9 (24.48–70.42) vs. 66.7 (40.53–88.01), p < 0.001; JIF: 2.59 (1.90–3.84) vs. 2.93 (2.09–4.20) p = 0.008], while the proportion of A or B rank clinical research papers of the SIGAPS category was not significantly different between the two groups (30.0 vs. 34.9%, p = 0.318). In the logistic regression analysis, having a CNCI ≥ 2 was significantly associated with research funding (public institution-funded and industry-funded) and publication in A or B rank journals of the SIGAPS category [research funding: Estimate 2.169, 95% confidence interval (CI) 1.153–4.083, p = 0.016; SIGAPS category A/B: Estimate 6.126, 95% CI 3.889–9.651, p < 0.001]. Conclusion Analysis via multiple indicators including CNCI and the SIGAPS category, which allows for a comparison of the papers’ citation impact in different research fields, found a positive relation between research funding status and the citation impact of clinical research papers.
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Affiliation(s)
- Fumito Morisawa
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Rare Disease Medical Affairs, Pfizer Japan Inc., Tokyo, Japan
| | - Yuji Nishizaki
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
- *Correspondence: Yuji Nishizaki,
| | - Patrick Devos
- Department of Lillometrics, University of Lille, CHU Lille, Lille, France
| | | | - Kotone Matsuyama
- Center for Strategic Research Initiative, Nippon Medical School Foundation, Tokyo, Japan
- Department of Health Policy and Management, Nippon Medical School, Tokyo, Japan
| | - Yasuhiro Homma
- Department of Orthopedic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rieko Ueda
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Miwa Sekine
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Hiroyuki Daida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Faculty of Health Science, Juntendo University, Tokyo, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shoji Sanada
- Clinical and Translational Research Center, Kobe University Hospital, Kobe, Japan
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Nithianandan H, Kuriyan AE, Venincasa MJ, Sridhar J. <p>Analysis of Funding Source and Spin in the Reporting of Studies of Intravitreal Corticosteroid Therapy for Diabetic Macular Edema: A Systematic Review</p>. Clin Ophthalmol 2020; 14:2383-2395. [PMID: 32903959 PMCID: PMC7445525 DOI: 10.2147/opth.s262085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/28/2020] [Indexed: 01/05/2023] Open
Affiliation(s)
- Harrish Nithianandan
- Department of Ophthalmology & Visual Sciences, McGill University, Montreal, Quebec, Canada
| | - Ajay E Kuriyan
- Retina Service, Wills Eye Hospital, Philadelphia, PA, USA
| | - Michael J Venincasa
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jayanth Sridhar
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miller School of Medicine, University of Miami, Miami, FL, USA
- Correspondence: Jayanth Sridhar Email
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