系统评价（Systematic Review，SR）旨在收集所有符合预定纳入标准的研究证据，并对其进行整理评价，通过综合分析来回答某一具体的研究问题。因其采用明确、系统的方法，可以减少偏倚风险，提供更为可靠的结果，从而促进决策。系统评价的主要特征包括以下几点：目的明确、预设的文献纳入标准清晰；方法明确且可重复；系统检索所有符合纳入标准的研究文献；评估纳入研究结果的真实性，如评估偏倚风险；系统描述及整合纳入研究的特点和结果。Meta分析（Meta-Analysis，MA）是采用统计学方法对原始研究的结果进行合并统计分析的方法。与单个研究的评价相比，Meta分析通过整合所有低偏倚风险研究的数据，可更精确的估计卫生保健的效果，并有利于探索各研究证据的一致性及研究间的差异性。

相关论文或成果：

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6.Wang Z, Zhao S, Tang Y, et al. Potentially effective drugs for the treatment of COVID-19 or MIS-C in children: a systematic review[J]. Eur J Pediatr. 2022,181(5):2135-2146.

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8.黄慈波,杨楠,张志毅,等.骨关节炎分类标准和评估工具的概况性系统评价[J].中华风湿病学杂志,2019(02):82-88.

9.林浩,朱庆斌,倪小佳,等.中国神经血管手术防治卒中相关指南的系统评价[J].中国脑血管病杂志,2018,15(04):169-176.