Clinical trial : A Review.

ABSTRACT

Randomized clinical trials are scientific investigations that examine and evaluate the safety and efficacy of new drugs, devices, tests, or lifestyle interventions using human subjects. The results that these clinical trials generate are considered to be the most robust data in the era of evidence-based medicine. The primary aim of most clinical trials is to provide an unbiased evaluation of the merits of using one or more treatment options for a given disease or condition of interest. Ideally, clinical trials should be performed in a way that isolates the effect of treatment on the study outcome and provides results that are free from study bias.