Community trials address the efficacy of preventive interventions applied at the group level (e.g. , a social marketing campaign trial).A clinical trial is a medical research study that tests new ways to prevent, screen, diagnose or treat a disease. Clinical trials are designed and carried out to answer research questions about the safety and efficacy of specific health interventions. Clinical trials power medical progress and allow principal investigators to test new ways to prevent, detect, and treat respiratory disease. A clinical trial is a research study where experts study potential treatments. The treatments might be new drugs or devices. Phase I studies typically offer little or no benefit to the volunteer subjects; therefore they typically are compensated for their time and effort. SUNY Downstate is home to five schools and colleges and University Hospital of Brooklyn. We are New York City's only SUNY academic medical center.