Meta-analysis

一、什么是效应量 效应量是用以衡量“效应”大小的指标，可以量化变量之间的关联程度，可以比较自身前后变化，也可以比较组间差异。 效应量并非只是某一

Here are some suggestions for definitions that may help to clarify the terminology: Meta-analysis: A general term to denote the collection of statistical methods and techniques used to aggregate/synthesize and compare the results from several related studies in a systematic manner. Moderator analysis: In the context of a meta-analysis, this refers to using some kind of method in an attempt to find and account for systematic differences in the size of the effect or outcome that is being meta-analyzed.