Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ.
Division of Epidemiology and Biostatistics, Department of Obstetrics, Gynecology, and Reproductive Sciences, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ; Department of Health Policy and Management, Mailman School of Public Health, Columbia University, New York, NY.
Am J Obstet Gynecol. 2019 Jan;220(1):12-25. doi: 10.1016/j.ajog.2018.11.1091. Epub 2018 Nov 16.
The Journal has had a profound influence in nearly 150 years of publishing. A bibliometric analysis, which uses citation analyses to evaluate the impact of articles, can be used to identify the most impactful papers in the Journal's history.
The objective was to identify and characterize the top-cited articles published in the Journal since 1920.
We used the Web of Science and Scopus databases to identify the most frequently cited articles of the Journal from 1920 through 2018. The top 100 articles from each database were included in our analysis. Articles were evaluated for several characteristics including year of publication, article type, topic, open access, and country of origin. Using the Scopus data, we performed an unadjusted categorical analysis to characterize the articles and a 2 time point analysis to compare articles before and after 1995, the median year of publication from each database list.
The top 100 articles from each database were included in the analysis. This included 120 total articles: 80 articles listed in both and 20 unique in each database. More than half (52%) were observational studies, 9% were RCTs, and 75% were from US authors. When the post-1995 studies were compared with the articles published before 1995, articles were more frequently cited (median 27 vs 13 citations per year, P < .001), more likely to be randomized (14.0% vs 4.8%, P = .009), and more likely to originate from international authors (33.3% vs 17.5%, P = .045).
Slightly more than half of the top-cited papers in the Journal since 1920 were observational studies and three quarters of all papers were from US authors. Compared with top-cited papers before 1995, the Journal's top-cited papers after 1995 were more likely to be randomized and to originate from international authors.
该杂志在近 150 年的出版历史中产生了深远的影响。文献计量分析可利用引文分析来评估文章的影响力，可用于确定该杂志历史上最具影响力的论文。
旨在确定和描述自 1920 年以来发表在该杂志上的被引频次最高的文章。
我们使用 Web of Science 和 Scopus 数据库，从 1920 年至 2018 年，确定该杂志发表的被引频次最高的 100 篇文章。每个数据库中收录的前 100 篇文章都包含在我们的分析中。我们评估了文章的几个特征，包括发表年份、文章类型、主题、开放获取和来源国。使用 Scopus 数据，我们进行了未调整的分类分析以描述文章，并进行了 2 个时间点分析，以比较 1995 年（每个数据库列表的中位发表年份）之前和之后的文章。
每个数据库的前 100 篇文章都包含在分析中。这包括 120 篇总文章：两个数据库中各有 80 篇文章，每个数据库各有 20 篇唯一的文章。超过一半（52%）为观察性研究，9%为 RCT，75%的作者来自美国。与 1995 年前发表的文章相比，1995 年后发表的文章被引频次更高（中位数每年 27 次与 13 次，P <.001），更有可能为随机（14.0%与 4.8%，P =.009），且更有可能来自国际作者（33.3%与 17.5%，P =.045）。
自 1920 年以来，该杂志发表的被引频次最高的论文中略多于一半为观察性研究，四分之三的论文来自美国。与 1995 年前发表的高被引论文相比，1995 年后发表的该杂志的高被引论文更有可能为随机对照试验且来自国际作者。
