A feasibility trial is a type of small-scale study conducted to assess the practicality and potential success of conducting a larger, more definitive study. These trials are typically used to test the feasibility of various aspects of the research process, such as recruitment strategies, data collection methods, and intervention protocols. Feasibility trials help researchers identify and address potential challenges or barriers that may arise during a larger trial, allowing them to refine their procedures and protocols before investing time and resources into a larger study. The goal of a feasibility trial is to determine whether a full-scale study is likely to be successful and to inform the design of such a study.