People's Hospital of Leshan, Leshan, Sichuan, People's Republic of China.
BMJ Open. 2016 Aug 3;6(8):e011623. doi: 10.1136/bmjopen-2016-011623.
OBJECTIVES: The aim of this study is to compare the quantity and quality of scientific publications in transplantation fields that were written by researchers from Mainland China, Japan, South Korea and Taiwan in the East Asia region. SETTINGS: East Asia. PARTICIPANTS AND OUTCOME MEASURES: Articles except editorials, conference abstracts, letters, news and corrections published in 25 transplantation journals from 2006 to 2015 were screened with the Web of Science database. The number of total and annual articles, article types (study design and transplantation site), impact factor, citations and articles in the high-impact journals was determined to assess the quantity and quality of transplantation research from East Asia. The correlation of socioeconomic factors and annual publications was also analysed. RESULTS: From 2006 to 2015, there were 47 141 articles published in transplantation journals, of which researchers from Japan published 3694 articles, followed by Mainland China, South Korea and Taiwan with 2778, 1643 and 951 articles, respectively. Similar trends were observed in accumulated impact factor, accumulated citations, articles in the high-impact journals and articles on transplantation site. Publications from Japan had the highest average impact factor and citation, while those from Mainland China had the lowest. Additionally, in terms of study design, authors from Mainland China contributed to most clinical trials and randomised controlled trials, but authors from Japan contributed to most case reports. The annual numbers of articles from Mainland China and South Korea increased linearly (p<0.05), but those from Japan and Taiwan remained stable for the period studied. The annual numbers of articles from Mainland China and South Korea were positively correlated with gross domestic product (p<0.05). CONCLUSIONS: Transplantation research productivity in East Asia is highly skewed, with gross domestic product having a significant positive correlation. Mainland China still lags far behind Japan in most bibliometric indicators; thus, there is vast room for improvement.
目的：本研究旨在比较东亚地区中国大陆、日本、韩国和中国台湾地区研究人员在移植领域发表的科研出版物的数量和质量。
背景：东亚。
参与者和结果测量：使用 Web of Science 数据库筛选了 2006 年至 2015 年间 25 种移植期刊的社论、会议摘要、信件、新闻和更正以外的文章。确定了总文章和年度文章数量、文章类型（研究设计和移植部位）、影响因子、引用量和高影响力期刊中的文章，以评估东亚地区的移植研究的数量和质量。还分析了社会经济因素与年度出版物的相关性。
结果：2006 年至 2015 年，在移植期刊上共发表了 47141 篇文章，其中日本研究人员发表了 3694 篇文章，其次是中国大陆、韩国和中国台湾地区，分别发表了 2778、1643 和 951 篇文章。在累积影响因子、累积引文、高影响力期刊中的文章和移植部位的文章方面也观察到了类似的趋势。日本出版物的平均影响因子和引文最高，而中国大陆的出版物最低。此外，就研究设计而言，中国大陆的作者主要参与了临床试验和随机对照试验，但日本的作者主要参与了病例报告。中国大陆和韩国的年度文章数量呈线性增长（p<0.05），而日本和中国台湾的数量在研究期间保持稳定。中国大陆和韩国的年度文章数量与国内生产总值呈正相关（p<0.05）。
结论：东亚地区的移植研究生产力高度偏斜，国内生产总值有显著的正相关关系。在大多数文献计量指标方面，中国大陆仍远远落后于日本；因此，有很大的改进空间。
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