Adults with more than 12 months history of migraines were assigned randomly in a double-blinded study to receive treatment with experimental drug X or placebo. The primary efficacy measure was the reduction in the severity of the migraine attacks. Enrollment was 1200 subjects. Which clinical phase does this best describe?
Adults with more than 12 months history of migraines were assigned randomly in a double-blinded study to receive treatment with experimental drug X or placebo. The primary efficacy measure was the reduction in the severity of the migraine attacks. Enrollment was 1200 subjects. Which clinical phase does this best describe?
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Phase 3