Journal ArticleDOI
Beyond publication bias.
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TLDR
The terminology and concepts relevant to this bias are explored and a more systematic nomenclature than what is currently used is proposed.About:
This article is published in Journal of Clinical Epidemiology.The article was published on 2011-05-01. It has received 222 citations till now. The article focuses on the topics: Publication bias & Evidence-based medicine.read more
Citations
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A meta-analysis of estimates of urban agglomeration economies
TL;DR: The authors conducted a meta-analysis of 729 elasticities taken from 34 different studies to make sense of the range of values for agglomeration economies found in the literature by identifying some key characteristics that affect the magnitude of the results obtained.
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The association between breastfeeding and childhood obesity: a meta-analysis
TL;DR: Results of the meta-analysis suggest that breastfeeding is a significant protective factor against obesity in children.
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Estimating vertical spillovers from FDI: Why results vary and what the true effect is
TL;DR: In the last decade, more than 100 researchers have examined productivity spillovers from foreign affiliates to local firms in upstream or downstream sectors, and the results vary broadly across methods and countries.
Journal ArticleDOI
The aid effectiveness literature : the sad results of 40 years of research
TL;DR: The aid effectiveness literature (AEL) consists of empirical macroeconomic estimates of the effects of development aid as discussed by the authors, which is an ideal subject for meta-analysis as it uses only a few formally similar models to estimate the same underlying effects.
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Valuing ecosystem services: Theory, practice, and the need for a transdisciplinary synthesis
TL;DR: Ecosystem services valuation researchers will have to transcend disciplinary boundaries and synthesize tools, skills, and methodologies from various disciplines because ultimately the success of ESV will be judged on how well it facilitates real‐world decision making and the conservation of natural capital.
References
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Journal ArticleDOI
Bias in meta-analysis detected by a simple, graphical test
TL;DR: Funnel plots, plots of the trials' effect estimates against sample size, are skewed and asymmetrical in the presence of publication bias and other biases Funnel plot asymmetry, measured by regression analysis, predicts discordance of results when meta-analyses are compared with single large trials.
Book
Cochrane Handbook for Systematic Reviews of Interventions
Julian P T Higgins,Sally Green +1 more
TL;DR: The Cochrane Handbook for Systematic Reviews of Interventions is the official document that describes in detail the process of preparing and maintaining Cochrane systematic reviews on the effects of healthcare interventions.
Journal ArticleDOI
Operating characteristics of a rank correlation test for publication bias.
TL;DR: In this paper, an adjusted rank correlation test is proposed as a technique for identifying publication bias in a meta-analysis, and its operating characteristics are evaluated via simulations, and the test statistic is a direct statistical analogue of the popular funnel-graph.
Journal ArticleDOI
Trim and fill: A simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis.
Sue Duval,Richard L. Tweedie +1 more
TL;DR: In this paper, a rank-based data augmentation technique is proposed for estimating the number of missing studies that might exist in a meta-analysis and the effect that these studies might have had on its outcome.
Journal ArticleDOI
Does quality of reports of randomised trials affect estimates of intervention efficacy reported in meta-analyses
David Moher,David Moher,Ba' Pham,Alison Jones,Deborah J. Cook,Alejandro R. Jadad,Michael Moher,Peter Tugwell,Terry P. Klassen,Terry P. Klassen +9 more
TL;DR: Study of low methodological quality in which the estimate of quality is incorporated into the meta-analyses can alter the interpretation of the benefit of intervention, whether a scale or component approach is used in the assessment of trial quality.