Department of Gastroenterology, Changhai Hospital, The Second Military Medical University, Shanghai, China.
Medicine (Baltimore). 2022 Aug 5;101(31):e29454. doi: 10.1097/MD.0000000000029454.
Endoscopic retrograde cholangiopancreatography (ERCP) has been used in clinical practice for over 50 years. This study aims to investigate the current state of research in the field of ERCP.
Web of Science database was searched using the term "ERCP" for articles published between 1994 and 2018. The total number of articles from the top 20 countries with the most published articles was determined. The top 5 countries were compared in terms of output per capita, number of articles published in top journals, cumulative impact factor (IF), and average IF. All annual data were subjected to time-trend analysis. The frequently used terms in the titles and abstracts of all articles were retrieved to conduct co-occurrence analysis to determine the research focus of ERCP.
A total of 9960 articles on ERCP were published between 1994 and 2018, of which 8778 articles were from the top 20 producing countries. There was a significant positive correlation between the output and GDP of each country (R = 0.870, P = .001). The United States of America (USA), Japan, Germany, Italy, and China were the top 5 producing countries with 3190 (32.0%), 868 (8.7%), 658 (6.6%), 512 (5.1%) and 488 (4.9%) articles published, respectively. The USA, Japan, Italy, and China were trending upwards in the total outputs and outputs per capita, while Germany were trending downwards. For average IF, Germany had a downwards trend, while the other 4 countries remained stable. Overall, the USA had the highest output per capita (97.5/10 million) and the highest average IF (6.454). China had the lowest output per capita (3.5/10 million) and average IF (3.125). The ERCP procedures for sphincter of Oddi dysfunction, the combination of ERCP, and laparoscopic cholecystectomy have been the research focus of ERCP.
Except for Germany, research on ERCP will continue to increase in the top-producing countries. The outputs per capita and quality of articles from developed countries are higher than those from developing countries.
内镜逆行胰胆管造影术（ERCP）在临床实践中已经使用了 50 多年。本研究旨在调查 ERCP 领域的研究现状。
在 Web of Science 数据库中使用术语“ERCP”检索 1994 年至 2018 年发表的文章。确定发表文章最多的前 20 个国家的文章总数。比较前 5 个国家的人均产出、发表在顶级期刊上的文章数量、累积影响因子（IF）和平均 IF。所有年度数据均进行时间趋势分析。检索所有文章标题和摘要中常用的术语，进行共现分析，以确定 ERCP 的研究重点。
1994 年至 2018 年间共发表了 9960 篇关于 ERCP 的文章，其中 8778 篇来自前 20 个产出国。每个国家的产出与 GDP 之间呈显著正相关（R = 0.870，P =.001）。美国、日本、德国、意大利和中国是前 5 大产出国，分别发表了 3190 篇（32.0%）、868 篇（8.7%）、658 篇（6.6%）、512 篇（5.1%）和 488 篇（4.9%）文章。美国、日本、意大利和中国的总产出和人均产出呈上升趋势，而德国则呈下降趋势。就平均 IF 而言，德国呈下降趋势，而其他 4 个国家保持稳定。总的来说，美国的人均产出最高（97.5/100 万人），平均 IF 也最高（6.454）。中国的人均产出最低（3.5/100 万人），平均 IF 也最低（3.125）。Oddi 括约肌功能障碍的 ERCP 治疗、ERCP 与腹腔镜胆囊切除术联合应用一直是 ERCP 的研究重点。
除德国外，前 20 大产出国的 ERCP 研究将继续增加。发达国家的人均产出和文章质量高于发展中国家。
