randomized trial

A randomized trial is a scientific study used to evaluate how well a new treatment or intervention works. Participants are randomly assigned to different groups—one receives the treatment, while others may receive a standard treatment or a placebo. This random assignment helps ensure that each group is alike in important ways, reducing bias. Researchers then compare outcomes between groups to see if the new treatment is effective and safe. Randomized trials are considered a reliable way to test medical interventions because they help produce unbiased, trustworthy results.