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近年来，在医学领域出现了一个以定量分析为主的文献综述方法。术语各有不同，有的称为Meta分析，有的称为合并分析，或研究合并、数据合并、定量综合、结果合并等。目前已统一为“Meta－analysis”，并且成为文献检索的关键词之一。１９７６年，Glass［１］首先对Meta分析定义
In recent years, a literature review method based on quantitative analysis has appeared in the medical field. Terms are different, some are called Meta analysis, some are called merger analysis, or research merger, data consolidation, quantitative synthesis, the results of the merger. It has been unified as “Meta-analysis” and has become one of the key words in literature search. In 1976, Glass [1] first defined meta-analysis