The role of method in treatment effectiveness research: evidence from meta-analysis.
The role of method in treatment effectiveness research: evidence from meta-analysis.
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DOI：
10.1037/1082-989x.6.4.413
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发表时间：
2001-12
影响因子：
7
通讯作者：
David B. Wilson;M. Lipsey
中科院分区：
文献类型：
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作者：
David B. Wilson;M. Lipsey
对319项心理、行为和教育治疗研究的荟萃分析进行了综合，以评估研究方法对观察到的效应大小的影响，相对于干预措施的实质性特征。一个指数被用来估计与各种研究特征相关的效应量方差的比例。研究方法几乎与干预措施的特征一样多。研究设计类型和因变量的可操作性是与方差比例最大相关的方法特征。作为抽样误差的结果的方差是一样大的干预措施研究的功能相关。这些结果强调了检测治疗结果的困难，谨慎解释单个研究结果的重要性，以及荟萃分析在总结研究结果中的重要性。
A synthesis of 319 meta-analyses of psychological, behavioral, and educational treatment research was conducted to assess the influence of study method on observed effect sizes relative to that of substantive features of the interventions. An index was used to estimate the proportion of effect size variance associated with various study features. Study methods accounted for nearly as much variability in study outcomes as characteristics of the interventions. Type of research design and operationalization of the dependent variable were the method features associated with the largest proportion of variance. The variance as a result of sampling error was about as large as that associated with the features of the interventions studied. These results underscore the difficulty of detecting treatment outcomes, the importance of cautiously interpreting findings from a single study, and the importance of meta-analysis in summarizing results across studies.