Research Synthesis Methods

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revtools: An R package to support article screening for evidence synthesis
Research Synthesis Methods - Tập 10 Số 4 - Trang 606-614 - 2019
Martin J. Westgate
The field of evidence synthesis is growing rapidly, with a corresponding increase in the number of software tools and workflows to support the construction of systematic reviews, systematic maps, and meta‐analyses. Despite much progress, however, a number of problems remain, including slow integration of new statistical or methodological approaches into user‐friendly software, low prevalen...... hiện toàn bộ
A basic introduction to fixed-effect and random-effects models for meta-analysis
Research Synthesis Methods - Tập 1 Số 2 - Trang 97-111 - 2010
Michael Borenstein, Larry V. Hedges, Julian P. T. Higgins, Hannah R. Rothstein
A scoping review of scoping reviews: advancing the approach and enhancing the consistency
Research Synthesis Methods - Tập 5 Số 4 - Trang 371-385 - 2014
Mai Pham, Andrijana Rajić, Judy Greig, Jan M. Sargeant, Andrew Papadopoulos, Scott A. McEwen
BackgroundThe scoping review has become an increasingly popular approach for synthesizing research evidence. It is a relatively new approach for which a universal study definition or definitive procedure has not been established. The purpose of this scoping review was to provide an overview of scoping reviews in the literature.... hiện toàn bộ
Critical interpretation of Cochran's Q test depends on power and prior assumptions about heterogeneity
Research Synthesis Methods - Tập 1 Số 2 - Trang 149-161 - 2010
Tiago Pereira, Nikolaos A. Patsopoulos, Georgia Salanti, John P. A. Ioannidis
Methods for the joint meta‐analysis of multiple tests
Research Synthesis Methods - Tập 5 Số 4 - Trang 294-312 - 2014
Thomas A Trikalinos, David C. Hoaglin, Kevin Small, Norma Terrin, Christopher H. Schmid
Existing methods for meta‐analysis of diagnostic test accuracy focus primarily on a single index test. We propose models for the joint meta‐analysis of studies comparing multiple index tests on the same participants in paired designs. These models respect the grouping of data by studies, account for the within‐study correlation between the tests' true‐positive rates (TPRs) and between thei...... hiện toàn bộ
Introduction, comparison, and validation of Meta‐Essentials: A free and simple tool for meta‐analysis
Research Synthesis Methods - Tập 8 Số 4 - Trang 537-553 - 2017
Robert Suurmond, Henk van Rhee, Tony Hak
We present a new tool for meta‐analysis, Meta‐Essentials, which is free of charge and easy to use. In this paper, we introduce the tool and compare its features to other tools for meta‐analysis. We also provide detailed information on the validation of the tool. Although free of charge and simple, Meta‐Essentials automatically calculate...... hiện toàn bộ
Pooling health‐related quality of life outcomes in meta‐analysis—a tutorial and review of methods for enhancing interpretability
Research Synthesis Methods - Tập 2 Số 3 - Trang 188-203 - 2011
Kristian Thorlund, Stephen D. Walter, Bradley C. Johnston, Toshi A. Furukawa, Gordon Guyatt
Background– Meta‐analyses of health‐related quality of life (HRQL) outcomes present difficulties in interpretation when studies use different instruments to measure the same construct. Presentation of results in standard deviation units (standardized mean difference) is widely used but is limited by vulnerability to differential variability in populations...... hiện toàn bộ
Robust variance estimation in meta‐regression with dependent effect size estimates
Research Synthesis Methods - Tập 1 Số 1 - Trang 39-65 - 2010
Larry V. Hedges, Elizabeth Tipton, Matthew C. Johnson
AbstractConventional meta‐analytic techniques rely on the assumption that effect size estimates from different studies are independent and have sampling distributions with known conditional variances. The independence assumption is violated when studies produce several estimates based on the same individuals or there are clusters of studies that are not independent...... hiện toàn bộ
Graphical displays for meta‐analysis: An overview with suggestions for practice
Research Synthesis Methods - Tập 1 Số 1 - Trang 66-80 - 2010
Judith Anzures‐Cabrera, Julian P. T. Higgins
AbstractMeta‐analyses are fundamental tools for collating and synthesizing large amounts of information, and graphical displays have become the principal tool for presenting the results of multiple studies of the same research question. We review standard and proposed graphical displays for presentation of meta‐analytic data, and offer our recommendations on how th...... hiện toàn bộ
Challenges of identifying unpublished data from clinical trials: Getting the best out of clinical trials registers and other novel sources
Research Synthesis Methods - Tập 9 Số 4 - Trang 561-578 - 2018
Jaana Isojärvi, Hannah Wood, Carol Lefebvre, Julie Glanville
Clinical trial data are essential for assessments of the effectiveness of health care interventions. Information about ongoing or completed, but not yet formally published, trials has been more difficult to identify until the development of clinical trials registers and portals. This paper summarises research evidence on identifying sources of trial data, how and when to search those sourc...... hiện toàn bộ
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