![]() Interventions allotted to the research subjects based on randomization method and pattern used for the study. Depend upon the allocation of intervention to the study groups, again based study designs, interventional trials divided into following types. In this type, one or more treatments or interventions allotted to a group of research subjects to measure the treatment related outcome. Intervention trials also known as Experimental studies. Depend upon the purpose, types of clinical trials broadly divided as follows. Here one thing should be noted that types of clinical trials are different from types study designs used in the clinical studies. Depend upon the purpose of study different types of clinical trials conducted. Some studies does not given any study medication, even some studies only observe healthy volunteers for particular period of time to achieve their objectives. ![]() It does not necessarily mean that you have to give medication/ intervention to the research subjects. Clinical research involving the human subjects known as clinical trials. Different types of clinical trials available depend on the purpose of the study. ![]()
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