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AMeta-analysis（Ⅰ）A69何谓Meta-analysis？答：Meta-analysis是一种对具有相同研究目的的相互独立的多个研究结果进行系统的、综合分析的研究方法。这种方法于1976年由Glass命名，在国外已得到较广泛的应用，根据对Medline的检索，涉及Meta－analysis的文献已超过5000篇.在
AMeta-analysis (Ⅰ) A69 What is Meta-analysis? A: Meta-analysis is a systematic and comprehensive analysis of multiple independent studies with the same research purpose. This method was named by Glass in 1976 and has been widely used abroad. According to the search of Medline, there are more than 5000 articles involving Meta-analysis.