Physicians' reports become a large part of the data in which phase of clinical trials?

Question

Quizplus · Accepted Answer

Phase 4 clinical trials, also known as post-marketing surveillance trials, occur after a drug has been approved for public use. During this phase, physicians' reports on the drug's performance, side effects, and long-term effects become a significant part of the data collected, as the drug is now being used in a much larger, more diverse population than in the controlled environments of earlier phases.

Physicians' Reports Become a Large Part of the Data in Which