Previously unidentified duplicate registrations of clinical trials: an exploratory analysis of registry data worldwide

Conclusions The ICTRP portal does not currently enable the unambiguous identification of trials across registries. Further research is needed to identify and verify the duplicates that currently go undetected. Sponsors, registries, and the ICTRP should consider actions to ensure duplicate registrations are easily identifiable.
Source: Systematic Reviews - Category: Global & Universal Source Type: research