This study aims to reveal the evolution of publication hotspots in the field of electronic health records (EHRs) and differences among countries. We applied keyword frequency analysis, keyword co-occurrence analysis, principal component analysis, multidimensional scaling analysis, and visualization technology to compare the high-frequency Medical Subject Heading (MeSH) terms in six countries during the periods 1957–2008 and 2009–2016. After 2009, the number of MeSH terms reflecting information exchange and information mining increased, and various types of evaluations based on EHRs and cohort studies significantly increased. The top 20 MeSH terms between 2009 and 2016 constitute five relatively larger knowledge groups. Thus, we conclude that publication hotspots in EHR field have shifted from issues related to the adoption of EHRs to the utilization of EHRs, and the knowledge structure has become systematic. The publication's focus was different in the six countries, which may relate to their national characteristics.

中文翻译：

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1957年至2016年电子病历出版物热点的演变以及六个国家之间的差异。

这项研究旨在揭示电子健康记录（EHR）领域中出版物热点的演变以及各国之间的差异。我们应用了关键词频率分析，关键词共现分析，主成分分析，多维尺度分析和可视化技术，比较了1957–2008年和2009–2016年六个国家中的高频医学主题词（MeSH）术语。2009年之后，反映信息交换和信息挖掘的MeSH术语数量有所增加，并且基于EHR和队列研究的各种类型的评估显着增加。2009年至2016年间排名最高的20个MeSH术语构成了五个相对较大的知识组。从而，我们得出的结论是，电子病历领域的出版热点已经从与电子病历的采用相关的问题转移到了电子病历的利用，并且知识结构已变得系统化。六个国家的出版物重点不同，这可能与其国家特征有关。