Section of Urology, Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.
Mathews-Fuller Library, Dartmouth College, Lebanon, NH, USA.
J Sex Med. 2018 Oct;15(10):1426-1433. doi: 10.1016/j.jsxm.2018.08.004. Epub 2018 Sep 12.
Scientific literature has experienced a significant growth in the number of authors per publication each year. Erectile dysfunction (ED) is one of the most common urologic conditions, accounting for over 2.9 million outpatient visits per year. Given the prevalence of ED and the large literature base available on this condition, bibliometric analysis of the ED literature could provide urologists and sexual medicine specialists with a better understanding of publication trends in this topic area.
The purpose of this study was to investigate trends in authorship, citations, and impact score for ED original and review articles published in urology and sexual medicine journals.
We analyzed ED original research and review articles indexed in MEDLINE between January 1, 2006, and December 31, 2016. Descriptive statistics were used to evaluate the mean number of authors for articles by journal type and time period (2006 vs 2016). Linear regression was used to examine the relationship between number of authors, number of citations, and relative citation ratio (RCR).
The primary outcomes of interest included mean number of authors, citations, and RCR per manuscript by journal type and time period.
A total of 3,516 articles were analyzed, 2,938 (83.6%) original and 578 (16.4%) review articles. The mean number of authors among ED publications increased from 4.8 in 2006 to 6.4 in 2016, a 34.4% increase. Original articles had a greater mean number of authors compared to review articles (6.0 vs 4.3, P < .001). The mean number of authors for original articles significantly increased from 5.0 in 2006 to 7.0 in 2016 (P < .001), an increase of 38.9%. A positive linear relationship was observed between mean number of authors and number of citations per manuscript (r = 0.015, P < .01) as well as RCR (r = 0.37, P < .0001). The largest authorship increases were observed in European Urology (78.8%), BJU International (78.6%), and Journal of Sexual Medicine (58.1%).
Authorship trends should be taken into consideration when urologists and sexual medicine experts review ED articles for the purpose of informing patient care.
Primary strengths include a large literature base spanning multiple years for analysis and a systematic literature search to identify relevant ED literature. Findings are limited to ED literature published in the urology and sexual medicine journals analyzed.
The number of authors per ED manuscript has significantly increased over time, most notably among original research articles. Increasing authorship was associated with more citations and higher RCR in the ED literature. Rezaee ME, Johnson HA, Munarriz RM, et al. Bibliometric Analysis of Erectile Dysfunction Publications in Urology and Sexual Medicine Journals. J Sex Med 2018;15:1426-1433.
每年发表的科学文献中每个出版物的作者数量都有显著增长。勃起功能障碍（ED）是最常见的泌尿科疾病之一，每年有超过 290 万门诊就诊。鉴于 ED 的普遍性和大量有关该疾病的文献基础，ED 文献的文献计量学分析可以让泌尿科医生和性医学专家更好地了解该主题领域的发表趋势。
本研究旨在调查发表在泌尿科和性医学期刊上的 ED 原始研究和综述文章的作者、引用和影响评分趋势。
我们分析了 2006 年 1 月 1 日至 2016 年 12 月 31 日期间 MEDLINE 索引的 ED 原始研究和综述文章。描述性统计用于评估按期刊类型和时间段（2006 年与 2016 年）的文章的平均作者数量。线性回归用于检查作者数量、引用数量和相对引用比（RCR）之间的关系。
主要观察结果包括按期刊类型和时间段的每个手稿的平均作者数量、引用数量和 RCR。
共分析了 3516 篇文章，其中 2938 篇（83.6%）为原始研究，578 篇（16.4%）为综述文章。ED 出版物的平均作者数量从 2006 年的 4.8 人增加到 2016 年的 6.4 人，增长了 34.4%。原始文章的平均作者数量多于综述文章（6.0 比 4.3，P <.001）。2006 年至 2016 年，原始文章的平均作者数量从 5.0 人增加到 7.0 人（P <.001），增加了 38.9%。作者数量与每篇手稿的引用数量（r = 0.015，P <.01）以及 RCR（r = 0.37，P <.0001）之间呈正线性关系。在欧洲泌尿学（78.8%）、BJU 国际（78.6%）和性医学杂志（58.1%）中观察到最大的作者人数增加。
泌尿科医生和性医学专家在审查 ED 文章以告知患者护理时，应考虑作者趋势。
主要优势包括多年来的大量文献基础，用于分析和系统的文献搜索以确定相关的 ED 文献。研究结果仅限于分析的泌尿科和性医学期刊中发表的 ED 文献。
ED 手稿的作者数量随着时间的推移显著增加，尤其是在原始研究文章中。作者人数的增加与 ED 文献中的引用和更高的 RCR 相关。
