《英文msh词典》Drug Evaluation,FDA Phase 2
[入口词] Drug Evaluation,FDA Phase 2
[主题词] Clinical Trials,Phase II
[英文释义] Studies that are usually controlled to assess the effectiveness and dosage (if appropriate) of diagnostic,therapeutic,or prophylactic drugs,devices,or techniques. These studies are performed on several hundred volunteers,including a limited number of patients with the target disease or disorder,and last about two years. This concept includes phase II studies conducted in both the U.S. and in other countries.