Systematic reviews and meta-analyses of mediation studies are increasingly being implemented in practice. Nonetheless, the methodology for conducting such review and analysis is still in a development phase, with much room for improvement. In this paper, we highlight and discuss challenges that investigators face in mediation systematic reviews and meta-analyses, then propose ways of accommodating these in practice.

翻译：调解研究的系统审查和元分析在实践中日益得到实施,然而,进行这种审查和分析的方法仍处于发展阶段,还有很大的改进余地,在本文件中,我们强调并讨论调查人员在调解系统审查和元分析中面临的挑战,然后提出在实践中予以适应的方法。