Meta分析中异质性检验方法的改进  

The Improvement of Testing Methods for Heterogeneity in Meta Analysis

作　　者：王若琦[1] 秦超英[1] 

机构地区：[1]西北工业大学,西安710129

出　　处：《科学技术与工程》2012年第10期2256-2259,共4页Science Technology and Engineering

摘　　要：以Meta分析中异质性程度检验的I2统计量为基础,研究了基于统计量Q、异质性方差估计量^τ2和H统计量作为评价指标来判断异质性程度的方法。给出了相应的判别标准。研究表明这些方法都是等价的。但是,用异质性方差估计量^τ2判断异质性程度更为直观、可靠。结合实例对上述方法进行了比较,讨论了这些方法的可行性和有效性。Based on the I2 statistic, which could test the heterogeneity level in Meta-analysis, then the method estimating the heterogeneity level ground on the,Q statistic is discussed, the heterogeneous variance 2 and H statis- tic while also provide the corresponding judgement standard. Although the results have indicated that these methods are all equivalent, the method which adopts heterogeneous variance ; to estimate the heterogeneity level is more in- tuitional and credible. These methods with example to discuss the feasibility and availability are also compared.

关 键 词：META分析 异质性 检验方法 I2统计量 τ^2统计量 

分 类 号：O241.1[理学—计算数学]