Background Overviews often identify and synthesise a large number of systematic reviews
on the same topic, which is likely to lead to overlap (ie duplication) in primary studies across …

An overview of reviews aims to collect, assess, and synthesize evidence from multiple
systematic reviews (SRs) on a specific topic using rigorous and reproducible methods. An …

Objective To assess the conditions under which employing an overview of systematic
reviews is likely to lead to a high risk of bias. Study Design To synthesise existing guidance …

Overlap of primary studies among systematic reviews (SRs) is one of the main
methodological challenges when conducting overviews. If not assessed properly …

Abstract Background and Objective To introduce potential static tabular and graphical
techniques for visually presenting overlap between systematic reviews (SRs) included in …

Objectives The aim of the study was to assess the completeness of reporting of methods in
overviews. Study Design and Setting Assessment of the adequacy of reporting of methods in …

Background Overviews of systematic reviews (SRs) attempt to systematically retrieve and
summarise the results of multiple systematic reviews. This is the second of two papers from a …

Background Adding, omitting or changing outcomes after a systematic review protocol is
published can result in bias because it increases the potential for unacknowledged or post …

Objectives To assess the reliability of the Cochrane Risk of Bias (ROB) tool between
individual raters and across consensus agreements of pairs of reviewers and examine the …

Objectives The objective of this study was to determine if the authors mention overlapping
reviews in overviews (reviews of reviews). In addition, we aimed to calculate the actual …