Clinical Trials, Phase II as Topic

**Definition:** Works about 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.

**Tree numbers:** - E05.318.372.250.250.210 - N05.715.360.330.250.250.210 - N06.850.520.450.250.250.210