The major purpose of Randomization in clinical trails is to-
Randomization ensures that the investigator has no. Control over allocation of paicipants to either study or control groups, thus eliminating what is known as selection bias. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 90
Facilitate double blinding
Help ensure that that study subjects are representative of general population
Ensure that the groups are comparable on baseline characteristics
Reduce selection bias in allocation of treatment
Epidemiology