Methods
The success of the RADAR program has previously been largely based on the use of diverse data sources to identify, clarify, and verify ADRs. Databases, registries, clinical trials, referral centers, and case reports have all been utilized as sites of detection. In particular, RADAR has made use of reports submitted to MedWatch as well as more focused databases such as the Medicare-SEER database. Hypothesis-driven active surveillance of a few hundred safety reports serves as the underlying conceptual framework of RADAR pharmacovigilance. Fewer than 20 individual ADR reports led to RADAR investigators identifying safety signals for the majority of the ADRs described to date. Despite a small number of reports for each ADR, causality assessments have been supported by pathology studies, antibody studies, and autopsies. For example, the initial description of thrombotic thrombocytopenic purpura associated with clopidogrel included only 11 cases.
Read more about this topic: Radar (Research On Adverse Drug Events And Reports)
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