<prompt> All are true about randomized control trial except?Baseline characteristics of intervention and control groups must be similarInvestigator bias can be minimized by double blindingThe sample size depends on the hypothesis testedDrop outs should be excluded from the analysis  <response>: Based on Intention to Treat analysis, the drop outs should also be included in the analysis to prevent an error in the result Ref : Parks Textbook of Preventive medicine 