Detection of publication and related biases remains suboptimal and threatens the validity
and interpretation of meta-analytical findings. When bias is present, it usually differentially …

Meta-analyses are increasingly used for synthesis of evidence from biomedical research,
and often include an assessment of publication bias based on visual or analytical detection …

As discussed in Chapter 5, funnel plots are a useful tool for diagnosing small-study effects in
meta-analysis. Possible causes of funnel plot asymmetry are shown in Table 5.2. While the …

Publication bias is a serious problem in systematic reviews and meta-analyses, which can
affect the validity and generalization of conclusions. Currently, approaches to dealing with …

Background: Statistical tests for funnel-plot asymmetry are common in meta-analyses.
Inappropriate application can generate misleading inferences about publication bias. We …

Background Funnel plots are widely used to investigate possible publication bias in meta-
analyses. There has, however, been little formal assessment of whether a visual inspection …

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 …

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 …

Publication and other forms of selection biases pose a threat to the validity of meta-analysis.
Funnel plots are usually used to detect such biases; asymmetrical plots are interpreted to …

The use of meta‐analysis to combine results of several trials is still increasing in the medical
field. The validity of a meta‐analysis may be affected by various sources of bias (for …