Graphical augmentations to sample-size-based funnel plot in meta-analysis
نویسندگان
چکیده
منابع مشابه
Graphical augmentations to the funnel plot assess the impact of additional evidence on a meta-analysis.
OBJECTIVE We aim to illustrate the potential impact of a new study on a meta-analysis, which gives an indication of the robustness of the meta-analysis. STUDY DESIGN AND SETTING A number of augmentations are proposed to one of the most widely used of graphical displays, the funnel plot. Namely, 1) statistical significance contours, which define regions of the funnel plot in which a new study ...
متن کاملFunnel plots in meta-analysis
Funnel plots are a visual tool for investigating publication and other bias in meta-analysis. They are simple scatterplots of the treatment effects estimated from individual studies (horizontal axis) against a measure of study size (vertical axis). The name “funnel plot” is based on the precision in the estimation of the underlying treatment effect increasing as the sample size of component stu...
متن کاملContribution to the sample mean plot for graphical and numerical sensitivity analysis
The contribution to the sample mean plot, originally proposed by Sinclair, is revived and further developed as practical tool for global sensitivity analysis. The potentials of this simple and versatile graphical tool are discussed. Beyond the qualitative assessment provided by this approach, a statistical test is proposed for sensitivity analysis. A case study that simulates the transport of r...
متن کاملTrim and fill: A simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis.
We study recently developed nonparametric methods 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. These are simple rank-based data augmentation techniques, which formalize the use of funnel plots. We show that they provide effective and relatively powerful tests for evaluating the existence of such...
متن کاملMeta-analysis, funnel plots and sensitivity analysis.
Publication bias is a major problem, perhaps the major problem, in meta-analysis (or systematic reviews). Small studies are more likely to be published if their results are 'significant' than if their results are negative or inconclusive, and so the studies available for review are biased in favour of those with positive outcomes. Correcting for this bias is not possible without making untestab...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Research Synthesis Methods
سال: 2019
ISSN: 1759-2879
DOI: 10.1002/jrsm.1340