Department of Orthopedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan.
School of Medicine, National Yang-Ming University, Taipei, Taiwan.
Eur J Med Res. 2021 Feb 23;26(1):22. doi: 10.1186/s40001-021-00494-x.
BACKGROUND: Citation analysis has been increasingly applied to assess the quantity and quality of scientific research in various fields worldwide. However, these analyses on spinal surgery do not provide visualization of results. This study aims (1) to evaluate the worldwide research citations and publications on spinal surgery and (2) to provide visual representations using Kano diagrams onto the research analysis for spinal surgeons and researchers. METHODS: Article abstracts published between 2007 and 2018 were downloaded from PubMed Central (PMC) in 5 journals, including Spine, European Spine Journal, The Spine Journal, Journal of Neurosurgery: Spine, and Journal of Spinal Disorders and Techniques. The article types, affiliated countries, authors, and Medical subject headings (MeSH terms) were analyzed by the number of article citations using x-index. Choropleth maps and Kano diagrams were applied to present these results. The trends of MeSH terms over the years were plotted and analyzed. RESULTS: A total of 18,808 publications were extracted from the PMC database, and 17,245 were affiliated to countries/areas. The 12-year impact factor for the five spine journals is 5.758. We observed that (1) the largest number of articles on spinal surgery was from North America (6417, 37.21%). Spine earns the highest x-index (= 82.96). Comparative Study has the highest x-index (= 66.74) among all article types. (2) The United States performed exceptionally in x-indexes (= 56.86 and 44.5) on both analyses done on the total 18,808 and the top 100 most cited articles, respectively. The most influential author whose x-index reaches 15.11 was Simon Dagenais from the US. (3) The most cited MeSH term with an x-index of 23.05 was surgery based on the top 100 most cited articles. The most cited article (PMID = 18164449) was written by Dagenais and his colleagues in 2008. The most productive author was Michael G. Fehlings, whose x-index and the author's impact factor are 13.57(= √(13.16*14)) and 9.86(= 331.57/33.64), respectively. CONCLUSIONS: There was a rapidly increasing scientific productivity in the field of spinal surgery in the past 12 years. The US has extraordinary contributions to the publications. Furthermore, China and Japan have increasing numbers of publications on spinal surgery. This study with Kano diagrams provides an insight into the research for spinal surgeons and researchers.
背景：引文分析已越来越多地应用于评估全球各领域的科学研究的数量和质量。然而，这些脊柱外科领域的分析并没有提供结果的可视化。本研究旨在：（1）评估全球脊柱外科的研究引文和出版物；（2）通过 Kano 图为脊柱外科医生和研究人员提供研究分析的直观表示。
方法：从 5 种期刊（包括 Spine、European Spine Journal、The Spine Journal、Journal of Neurosurgery：Spine 和 Journal of Spinal Disorders and Techniques）的 PubMed Central（PMC）中下载了 2007 年至 2018 年期间发表的文章摘要。使用 x 指数分析文章类型、所属国家/地区、作者和医学主题词（MeSH 术语）的文章引用数量。应用面状图和 Kano 图呈现这些结果。绘制并分析了多年来 MeSH 术语的趋势。
结果：从 PMC 数据库中提取了 18808 篇论文，其中 17245 篇论文来自国家/地区。5 种脊柱期刊的 12 年影响因子为 5.758。我们观察到：（1）脊柱外科领域论文数量最多的是北美（6417 篇，占 37.21%）。Spine 的 x 指数最高（=82.96）。比较研究在所有文章类型中 x 指数最高（=66.74）。（2）美国在 x 指数（分别为=56.86 和 44.5）上的表现非常出色，分别分析了总共 18808 篇论文和前 100 篇被引最多的论文。x 指数达到 15.11 的最有影响力的作者是来自美国的 Simon Dagenais。（3）基于前 100 篇被引最多的文章，被引最多的 MeSH 术语的 x 指数为 23.05。被引最多的文章（PMID=18164449）是 2008 年 Dagenais 及其同事撰写的。最有生产力的作者是 Michael G. Fehlings，他的 x 指数和作者影响因子分别为 13.57（=√（13.16*14））和 9.86（=331.57/33.64）。
结论：过去 12 年，脊柱外科领域的科学研究呈快速增长态势。美国对出版物有非凡的贡献。此外，中国和日本发表的脊柱外科论文数量也在不断增加。本研究通过 Kano 图为脊柱外科医生和研究人员提供了对研究的深入了解。
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