A randomized trial can be constituted-of-or-filled-with some interventions.
Randomized clinical trial may compare an (attrition prevention condition) to care.
An intervention may be shown in a randomized clinical trial.
A randomized controlled trial can be constituted-of-or-filled-with methylphenidate.
A randomized controlled trial may examine an efficacy of an intervention.
A randomized trial can be on an efficacy of (disulfiram therapy).
A randomized clinical trial may undergo (treatment retention outcomes).