Reporting biases

Publisher:
Cochrane Bias Methods Group
Publication date:
01 January 2017

Abstract

This brief guide from the Cochrane Bias Methods Groups describes common biases arising from the way results are reported.  Reporting biases arise when the dissemination of research findings is influenced by the nature and direction of results. Statistically significant, ‘positive’ results that indicate that an intervention works are more likely to be published, more likely to be published rapidly, more likely to be published in English, more likely to be published more than once, more likely to be published in high impact journals and, related to the last point, more likely to be cited by others.  The details are taken from Chapter 10 of the Cochrane Collaboration Handbook