Introduction: Rating the quality of a body of evidence is an increasingly common component of research syntheses on intervention effectiveness. This study sought to identify and examine existing systems for rating the quality of a body of evidence on the effectiveness of health and social interventions. Methods: We used a multicomponent search…

The United States is a world leader in biomedical clinical research. America's existing human subject research regulations structure affords sizable protections for the ethical treatment of research volunteers. Early initiatives such as the Belmont Report were specific to federally funded research. Over the past several decades guidelines such as…