Random-effects meta-analysis of RORs and dSMDs associated with lack of/unclear blinding of outcome assessors (versus blinding of outcome assessors).

<p>RHR = Ratio of hazard ratios. Hróbjartsson 2014a^a “standard trials” comprise those comparing experimental interventions with standard control interventions, such as placebo, no-treatment, usual care or active control. Hróbjartsson 2014a^b “atypical trials” comprise those comparing an oral experimental administration of a drug with the intravenous control administration of the same drug for cytomegalovirus retinitis.