Researchers’ decisions about whether, when, how or where to report studies or results are often influenced by the P value, magnitude or direction of the study results (‘non-reporting biases’). A consequence is bias in meta-analyses, because the available evidence differs systematically from the missing evidence.

In this web clinic, the presenters introduced ROB-ME ("Risk Of Bias due to Missing Evidence"), a comprehensive tool for assessing the risk of bias that arises when entire studies, or particular results within studies, are missing from a meta-analysis because of the P value, magnitude, or direction of the study results.

Recordings from the web clinic, as well as the accompanying slides to download are available here.

Posted by Rachel Richardson