Clinical Trials and Research
Clinical trials or clinical research are prospective experiments or behavioural research studies that involve human participants to determine safety and effectiveness of new treatments or, existing treatments. These can be observational study or interventional approach. In clinical research involving observational study, the investigators observe the subjects and measure their clinical outcomes. While, in interventional study, the investigators compare the treated subject with those receiving no standard treatment or, no treatment. Clinical trials are conducted in four phases, with ease phase having a different number of human participants and specific purpose.