文章基本信息

标题：Quality assessment in meta-analisys
本地全文：下载
作者：Giuseppe La Torre ; Giacomina Chiaradia ; Francesco Gianfagna 等
期刊名称：Italian Journal of Public Health
印刷版ISSN：1723-7815
出版年度：2012
卷号：3
期号：2
DOI：10.2427/5937
语种：English
出版社：PREX
摘要：Background : An important characteristic of meta-analysis is that the results are determined both by the management of the meta-analysis process and by the features of studies included. The scientific rigor of potential primary studies varies considerably and the common objection to meta-analytic summaries is that they combine results from studies of different quality. Researchers began to develop quality scales for experimental studies, however now the interest of researchers is also focusing on observational studies. Since 1980, when Chalmers developed the first quality scale to assess primary studies included in metaanalysis, more than 100 scales have been developed, which vary dramatically in the quality and quantity of the items included. No standard lists of items exist, and the used quality scales lack empirically-supported components. Methods : Two of the most important and diffuse quality scales for experimental studies, Jadad system and Chalmers’ scale, and a quality scale used for observational studies, developed by Angelillo et al., are described and compared. Conclusion : The fallibility of meta-analysis is not surprising, considering the various bias that may be introduced by the processes of locating and selecting studies, including publication bias, language bias and citation bias. Quality assessment of the studies offers an estimate of the likelihood that their results will express the truth.
关键词：Meta-analysis;quality assessment