【摘要】 预后指标在医学研究及临床实践中都具有重要意义。预后相关的系统评价/Meta分析对预后方面的研究资料进行评价、汇总以形成能用于指导临床实践的高质量证据。为了探索预后相关系统评价/Meta分析当前在全球范围的研究现状,本文通过检索Scopus数据库获得2006~2015年间发表的预后相关的系统评价/Meta分析文献,利用R软件、tm程序包、ggplot2程序包以及VOSviewer软件进行文献计量学分析、简单的文本挖掘及相关可视化展示。更多还原

【Abstract】 Prognostic indices are of major importance and significance in medical research and clinical practice. Prognosis-related systematic reviews/Meta-analyses evaluate and summarize relevant study findings, generating high quality clinically applicable evidence. In order to examine the current scientific landscape of prognosis-related systematic reviews/Meta-analyses worldwide, we performed this bibliometric analysis with text mining and visualization. Relevant literature published during 2006-2015 was used as the source material, which was obtained by searching the Scopus database. The R software, tm package, ggplot2 package and VOSviewer were used as software tools.更多还原