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BioMed Central, Systematic Reviews, 1(5)

DOI: 10.1186/s13643-016-0368-4

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Data extraction for complex meta-analysis (DECiMAL) guide

Journal article published in 2016 by Hugo Pedder, Grammati Sarri, Edna Keeney, Vanessa Nunes, Sofia Dias ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract As more complex meta-analytical techniques such as network and multivariate meta-analyses become increasingly common, further pressures are placed on reviewers to extract data in a systematic and consistent manner. Failing to do this appropriately wastes time, resources and jeopardises accuracy. This guide (data extraction for complex meta-analysis (DECiMAL)) suggests a number of points to consider when collecting data, primarily aimed at systematic reviewers preparing data for meta-analysis. Network meta-analysis (NMA), multiple outcomes analysis and analysis combining different types of data are considered in a manner that can be useful across a range of data collection programmes. The guide has been shown to be both easy to learn and useful in a small pilot study.