Datasheet2_Research topics and hotspot trends of lumbar spondylolisthesis: A text-mining study with machine learning.zip

ObjectivesThe study aimed to conduct a bibliometric analysis of publications concerning lumbar spondylolisthesis, as well as summarize its research topics and hotspot trends with machine-learning based text mining.
MethodsThe data were extracted from the Web of Science Core Collection (WoSCC) database and then analyzed in Rstudio1.3.1 and CiteSpace5.8. Annual publication production and the top-20 productive authors over time were obtained. Additionally, top-20 productive journals and top-20 influential journals were compared by spine-subspecialty or not. Similarly, top-20 productive countries/regions and top-20 influential countries/regions were compared by they were developed countries/regions or not. The collaborative relationship among countries and institutions were presented. The main topics of lumbar spondylolisthesis were classified by Latent Dirichlet allocation (LDA) analysis, and the hotspot trends were indicated by keywords with strongest citation bursts.
ResultsUp to 2021, a total number of 4,245 articles concerning lumbar spondylolisthesis were finally included for bibliometric analysis. Spine-subspecialty journals were found to be dominant in the productivity and the impact of the field, and SPINE, EUROPEAN SPINE JOURNAL and JOURNAL OF NEUROSURGERY-SPINE were the top-3 productive and the top-3 influential journals in this field. USA, Japan and China have contributed to over half of the publication productivity, but European countries seemed to publish more influential articles. It seemed that developed countries/regions tended to produce more articles and more influential articles, and international collaborations mainly occurred among USA, Europe and eastern Asia. Publications concerning surgical management was the major topic, followed by radiographic assessment and epidemiology for this field. Surgical management especially minimally invasive technique for lumbar spondylolisthesis were the recent hotspots over the past 5 years.
ConclusionsThe study successfully summarized the productivity and impact of different entities, which should benefit the journal selection and pursuit of international collaboration for researcher who were interested in the field of lumbar spondylolisthesis. Additionally, the current study may encourage more researchers joining in the field and somewhat inform their research direction in the future.

研究目的 本研究旨在针对腰椎滑脱症（lumbar spondylolisthesis）相关文献开展文献计量分析，并结合基于机器学习的文本挖掘技术，梳理该领域的研究主题与热点趋势。
研究方法 本研究的数据取自Web of Science核心合集（Web of Science Core Collection, WoSCC）数据库，随后采用RStudio 1.3.1与CiteSpace 5.8进行分析。研究获取了历年发文量以及发文量排名前20的作者；同时按是否隶属于脊柱亚专科类别，对发文量排名前20的期刊与学术影响力排名前20的期刊进行对比分析。类似地，按是否为发达国家/地区，对发文量排名前20的国家/地区与学术影响力排名前20的国家/地区进行对比，并可视化呈现国家与机构间的合作关系。本研究通过潜在狄利克雷分配（Latent Dirichlet allocation, LDA）模型对腰椎滑脱症领域的核心研究主题进行分类，并通过引用突现强度最高的关键词揭示该领域的热点演变趋势。
研究结果 截至2021年，本研究最终纳入共4245篇与腰椎滑脱症相关的文献用于文献计量分析。结果显示，脊柱亚专科期刊在该领域的发文量与学术影响力方面均占据主导地位；《SPINE》《EUROPEAN SPINE JOURNAL》及《JOURNAL OF NEUROSURGERY-SPINE》为本领域发文量与学术影响力均排名前三的期刊。美国、日本与中国的发文总量占全球总发文量的一半以上，但欧洲国家发表的高影响力文献占比更高。整体而言，发达国家/地区的发文量与高影响力文献占比均更高，且国际学术合作主要发生在美国、欧洲与东亚地区之间。该领域的核心研究主题以手术治疗为主，其次为影像学评估与流行病学研究；近五年来，腰椎滑脱症的手术治疗尤其是微创技术成为研究热点。
研究结论 本研究系统梳理了该领域不同主体的发文量与学术影响力，可为腰椎滑脱症领域研究者们的期刊投稿选择与国际合作探索提供参考；同时，本研究或可吸引更多研究者投身该领域，并为其未来的研究方向提供一定启示。