How many volunteers are typically involved in Phase 2 clinical testing?

Phase 2 clinical testing primarily aims to assess the efficacy of a drug in addition to its safety, and this phase typically involves a moderate number of participants. The range of 100-300 volunteers provides researchers with sufficient data to evaluate the drug's effects on the targeted condition without the statistical limitations that smaller trials might present. This sample size allows for the comparison of outcomes between those receiving the treatment and those who are not, which is essential for determining how well the drug works.

Having a number within this range allows for a robust evaluation of the drug's performance in a more heterogeneous population, which is crucial for understanding its potential effectiveness under real-world conditions. Additionally, the moderate size helps to balance the need for data diversity with logistical feasibility in terms of monitoring and managing the trial. Ultimately, this chosen range strikes a balance between practicality, data quality, and the statistical power needed to draw meaningful conclusions.