Most impoant factor which decides the results of a randomized controlled trial is: March 2005
Inclusion of all age groups
50% treated with placebo and 50% with drugs
100% follow up
Effective randomization
Ans. D: Effective randomization It is a procedure by which the paicipants are allocated into groups usually called 'study' and 'control' groups. Randomization is the hea of control trials. It eliminates selection bias