Since 1990, systematic reviews are growing exponentially with thousands being published each year. The objectives of this study were to determine both their temporal characteristics in terms of growth per year, subject areas, and publishing affiliations as well as their scientific impact. In this study we used 106,038 systematic reviews collected from Web of Science in 2019. These articles were analyzed to identify topics and publishing institutions, scientific impact and more. Our data shows that while the number of systematic reviews grows each year, their scientific impact diminishes. This can be seen in both citations and usage metrics. The journals that publish the most systematic reviews are below the normal Impact Factor for journals in the medical and biomedical arenas. There are very few institutions around the world, that produce most of the systematic reviews. Topics vary from one institution to another. The sheer number of systematic reviews publications is not an indication of quality or of impact. In fact, our data show that these are on the decline. There seems to be saturation in this area, which results in less interest in and utility of systematic reviews.

中文翻译：

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系统评价：特点和影响

自 1990 年以来，系统评价呈指数级增长，每年发表数以千计。本研究的目的是确定它们在每年增长、学科领域、出版机构及其科学影响方面的时间特征。在这项研究中，我们使用了 2019 年从 Web of Science 收集的 106,038 篇系统评价。对这些文章进行了分析，以确定主题和出版机构、科学影响等。我们的数据显示，虽然系统评价的数量每年都在增加，但它们的科学影响却在减弱。这可以在引用和使用指标中看到。发表最系统评论的期刊低于医学和生物医学领域期刊的正常影响因子。世界上很少有机构，产生大部分系统评价。主题因机构而异。系统评价发表的绝对数量并不代表质量或影响。事实上，我们的数据显示这些都在下降。该领域似乎已经饱和，这导致对系统评价的兴趣和实用性降低。