Which type of trials usually take many years to conduct and require tens of thousands of participants because they often focus on reducing the incidence of diseases that typically occur at a yearly cumulative incidence of 1% or less?

Question

Quizplus · Accepted Answer

Prevention trials are designed to assess the effectiveness of interventions in preventing diseases, which often have low incidence rates, necessitating large sample sizes and extended durations to detect significant differences.

Which Type of Trials Usually Take Many Years to Conduct