Introduction Positive results have a greater chance of being published and outcomes that
are statistically significant have a greater chance of being fully reported. One consequence …

• The potential for bias arising from knowledge of study results prior to the conduct of a
systematic review may influence the definition of the review question, the criteria for study …

Objective To investigate the impact of a higher publishing probability for statistically
significant positive outcomes on the false-positive rate in meta-analysis. Design Meta …

We used a Bayesian hierarchical selection model to study publication bias in 1106 meta‐
analyses from the Cochrane Database of Systematic Reviews comparing treatment with …

Publication bias has been previously identified as a threat to the validity of a meta-analysis.
Recently, new evidence has documented an additional threat to validity, the selective …

Background The tendency for authors to submit, and of journals to accept, manuscripts for
publication based on the direction or strength of the study findings has been termed …

Background The increased use of meta-analysis in systematic reviews of healthcare
interventions has highlighted several types of bias that can arise during the completion of a …

Background The published clinical research literature may be distorted by the pursuit of
statistically significant results. Purpose We aimed to develop a test to explore biases …

OBJECTIVE: To evaluate the measures taken to deal with publication bias across different
categories of systematic reviews published in 2006 and to compare these with reviews …

Background The validity of research synthesis is threatened if published studies comprise a
biased selection of all studies that have been conducted. We conducted a meta-analysis to …