randomized trial methodology

A randomized trial is a research method used to test how effective a treatment or intervention is. Participants are randomly assigned to different groups—usually one receiving the treatment and another receiving a placebo or standard care. Random assignment helps ensure the groups are similar at the start, eliminating bias and making it more likely that differences in outcomes are due to the treatment itself. Researchers then compare results between groups to determine if the treatment made a significant difference. This method provides reliable, unbiased evidence about whether a new intervention works.