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      Individual Participant Data (IPD) Meta-analyses of Randomised Controlled Trials: Guidance on Their Use

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          Abstract

          Jayne Tierney and colleagues offer guidance on how to spot a well-designed and well-conducted individual participant data meta-analysis.

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          The Cochrane Collaboration’s tool for assessing risk of bias in randomised trials

          Flaws in the design, conduct, analysis, and reporting of randomised trials can cause the effect of an intervention to be underestimated or overestimated. The Cochrane Collaboration’s tool for assessing risk of bias aims to make the process clearer and more accurate
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            Meta-analysis in clinical trials

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              Recommendations for examining and interpreting funnel plot asymmetry in meta-analyses of randomised controlled trials

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                Author and article information

                Journal
                PLoS Med
                PLoS Med
                plos
                plosmed
                PLoS Medicine
                Public Library of Science (San Francisco, CA USA )
                1549-1277
                1549-1676
                21 July 2015
                July 2015
                : 12
                : 7
                : e1001855
                Affiliations
                [1 ]MRC Clinical Trials Unit at University College London, London, United Kingdom
                [2 ]Research Institute of Primary Care and Health Sciences, Keele University, Keele, United Kingdom
                [3 ]MRC North West Hub for Trials Methodology Research, Department of Biostatistics, University of Liverpool, Liverpool, United Kingdom
                [4 ]Centre for Reviews and Dissemination, University of York, York, United Kingdom
                [5 ]Centre for Public Health, Queens University Belfast, Belfast, United Kingdom
                [6 ]Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
                Author notes

                We have read the journal's policy and have the following potential conflicts. JFT, LS, MC and MR are co-convenors of the Cochrane IPD Methods Group. All authors have been involved in the conduct and publication of IPD meta-analyses, related methodological research and guidance on the IPD approach to systematic review, and receive funding for these activities.

                Contributed to the writing of the manuscript: JFT CV RR CTS LS MC MR. Wrote the first draft of the manuscript: JFT CV RR CTS LS MC MR. Agree with the manuscript’s results and conclusions: JFT CV RR CTS LS MC MR. All authors have read, and confirm that they meet, ICMJE criteria for authorship.

                Article
                PMEDICINE-D-13-04070
                10.1371/journal.pmed.1001855
                4510878
                26196287
                662a3dab-c28b-4304-bb54-426579b3e2e8
                Copyright @ 2015

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

                History
                Page count
                Figures: 0, Tables: 2, Pages: 16
                Funding
                This work was supported by a grant (R20)from the UK Medical Research Council Network of Hubs for Trials Methodology Research. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
                Categories
                Guidelines and Guidance

                Medicine
                Medicine

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