Information on blinding in registered records of clinical trials

Abstract

Information on blinding is part of the data that should be provided upon registration of a trial at a clinical trials registry. Reporting of blinding is often absent or of low quality in published articles of clinical trials. This study researched the presence and quality of information on blinding in registered records of clinical trials and highlights the important role of data-recording formats at clinical trial registries in ensuring high-quality registration. © 2012 Viergever and Ghersi; licensee BioMed Central Ltd.