Disparities in Citation Metrics Amongst Web of Science, Scopus, and Google Scholar for Interventional Radiology Journals
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LETTER TO THE EDITOR
Disparities in Citation Metrics Amongst Web of Science, Scopus, and Google Scholar for Interventional Radiology Journals Vibhor Wadhwa1
•
George K. Vilanilam1 • Jeffrey Forris Beecham Chick2
Received: 17 April 2020 / Accepted: 25 May 2020 Springer Science+Business Media, LLC, part of Springer Nature and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2020
Editor, The scientific community relies on citation metrics to gauge the reputation of a journal. Academic institutions also utilize citation metrics as a criteria for promotion and tenure. Although there are many available citation metrics, the most important, for scientific journals, is the journal impact factor (JIF) published by Clarivate (Clarivate; Philadelphia, PA). The calculation of JIF relies on citation counts of the articles published in the journal and uses the Web of Science (WoS) database to count the number of citations. The other well-known citation indexing services used by the scientific community include Scopus (Elsevier Inc; Amsterdam, Netherlands) and Google scholar (GS) (Alphabet Inc; Mountain View, CA). It has been shown that disparities exist amongst these services in terms of citations metrics for other medical specialties. For the field of interventional radiology (IR), however, no analysis has reported the differences between these citation indexes. The purpose of this study was to evaluate the citation counts obtained from WoS, Scopus, and GS for three wellknown IR journals—Journal of Vascular and Interventional Radiology (JVIR), CardioVascular and Interventional Radiology (CVIR), and Journal of Endovascular Therapy (JET). Institutional review board approval was not required for this study. The 50 most cited articles, published in JVIR,
& Vibhor Wadhwa [email protected] 1
Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
2
Division of Interventional Radiology, Department of Radiology, University of Washington, Seattle, WA, USA
CVIR, and JET in 2016 and 2017, were obtained from the WoS database and included in this study. Citation counts were recorded for each article on April 10th, 2020 from WoS, Scopus, and GS. Means and standard deviations were calculated for citations obtained from all three sources for the journals. Paired sample t test was used to determine statistical differences in citations between the three sources. Additionally, the Altmetric score (Holtzbrinck Publishing Group; Stuttgart, Germany) for each article was recorded and the Spearman correlation test was used to determine correlation between citation counts and Altmetric scores. Two-tailed p value of \ 0.05 was considered significant. A total of 150 articles were included in this study (JVIR = 50; CVIR = 50; JET = 50). The mean number of citations obtained from WoS, Scopus, and GS for JVIR was 24.64 ± 10.43, 27.5 ± 12.43, and 36.8 ± 16.15, respectively; for CVIR were 25.62 ± 16.25, 27.52 ± 16.73, and 37.32 ± 22.11, respectively; and for JET were 22.90 ± 8.6
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