Randomization and Randomized Control Trial

Randomized control trial (RCT) is most simplest and powerful tools in clinical research. In this, participants are assigned by chance to different groups of interventions for comparison. By assigning participants to different intervention groups by chance, it gives objective comparison between the interventions and the researcher can control the exposure to intervention using different randomization techniques. If randomization is done properly in randomized control trial, it reduces unauthentic causality and bias. We review the types of randomized control trial with special emphasis on techniques used for randomization to get proper outcomes of randomized control trials.