Introduction: Clinical trial data can be presented in ways that exaggerate treatment effectiveness. Physicians consider therapy more effective, and may be more likely to make inappropriate practice changes, when data are presented in relative terms such as relative risk reduction rather than in absolute terms such as absolute risk reduction and…

Introduction: It has been suggested that the use of opinion leaders in the dissemination of information may be an effective method of changing clinical practice. Recent reviews on this topic, however, have found mixed results and have concluded that further research is needed to explore the circumstances that effectively utilize opinion leaders.…