Clinical study design
（重定向自Epidemiologic research design）
Clinical study design is the formulation of trials and experiments, as well as observational studies in medical, clinical and other types of research (e.g., epidemiological) involving human beings. The goal of a clinical study is to assess the safety, efficacy, and / or the mechanism of action of an investigational medicinal product, or new drug or device that is in development, but potentially not yet approved by a health authority (e.g. FDA).