Results 11 to 20 of about 981,244 (354)
BMC Medical Research Methodology, 2012 Background Emphasis is increasingly being placed on the monitoring of clinical outcomes for health care providers. Funnel plots have become an increasingly popular graphical methodology used to identify potential outliers.
Seaton Sarah E, Manktelow Bradley N
doaj +2 more sources
Reproductive Health, 2007 Background Despite efforts to assure high methodological standards, systematic reviews may be affected by publication bias. The objective of this study was to evaluate the occurrence of publication bias in a collection of high quality systematic reviews ...
Pileggi Cynthia +2 more
doaj +2 more sources
Contour–enhanced funnel plots for meta–analysis [PDF]
The Stata Journal: Promoting communications on statistics and Stata, 2008 Funnel plots are commonly used to investigate publication and related biases in meta-analysis. Although asymmetry in the appearance of a funnel plot is often interpreted as being caused by publication bias, in reality the asymmetry could be due to other factors that cause systematic differences in the results of large and small studies, for example ...
Tom Palmer +7 more
+5 more sources
Testing for funnel plot asymmetry of standardized mean differences
Research Synthesis Methods, 2018 Publication bias and other forms of outcome reporting bias are critical threats to the validity of findings from research syntheses. A variety of methods have been proposed for detecting selective outcome reporting in a collection of effect size ...
J. Pustejovsky, Melissa A. Rodgers
semanticscholar +5 more sources
Quantifying the risk of error when interpreting funnel plots [PDF]
Systematic Reviews, 2015 BackgroundFunnel plots are widely used to investigate possible publication bias in meta-analyses. There has, however, been little formal assessment of whether a visual inspection of a funnel plot is sufficient to identify publication bias.MethodsVisual ...
M. Simmonds
semanticscholar +3 more sources
Graphical augmentations to the funnel plot assess the impact of additional evidence on a meta-analysis. [PDF]
Journal of Clinical Epidemiology, 2012 Dean Langan +3 more
semanticscholar +2 more sources
Validation of the effect of increasing CO2 concentration on yield of wheat plant using meta-analysis method [PDF]
علوم محیطی, 2020 Introduction: Concerns about the potential effects of climate change on agricultural products have prompted significant research in the past decade. Cereals are the most important food in the world population and among the various cereals, wheat plays ...
Bita Mahdavi Amiri, Jafar Kambouzia
doaj +1 more source
Funnel Plots in Meta-analysis [PDF]
The Stata Journal: Promoting communications on statistics and Stata, 2004 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 ...
Jonathan A.C. Sterne, Roger M. Harbord
openaire +3 more sources
Market Innovation and Firm's Performance: A Meta-Analysis of the Literature Reviewed
iRASD Journal of Management, 2023 In this study, the performance of SMEs in Ethiopia was examined in relation to market innovation. The most recent international papers on market innovation served as a guidance for the study's meta-analysis.
Fisseha Dejene Yadete +2 more
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Funnels for publication bias – have we lost the plot? [PDF]
Anaesthesia, 2016 S. W. Choi, D. M. Lam
semanticscholar +3 more sources