Now is the time to fix the evidence generation system.

Despite enormous advances in biomedical science, corresponding improvements in health outcomes lag significantly. This is particularly true in the United States, where life expectancy trails far behind that of other high-income countries. In addition, substantial disparities in life expectancy and other health outcomes exist as a function of race, ethnicity, wealth, education, and geographic location. A major reformation of our national system for generating medical evidence-the clinical research enterprise-is needed to facilitate the translation of biomedical research into useful products and interventions. Currently, premarket systems for generating and evaluating evidence work reasonably well, but the postmarket phase is disaggregated and often fails to answer essential questions that must be addressed to provide optimal clinical care and public health interventions for all Americans. Solving these problems will require a focus on three key domains: (1) improving the integration of and access to high-quality data from traditional clinical trials, electronic health records, and personal devices and wearable sensors; (2) restructuring clinical research operations to support and incentivize the involvement of patients and frontline clinicians; and (3) articulating ethical constructs that enable responsible data sharing to support improved implementation. Finally, we must also address the systemic tendency to optimize individual components of the clinical research enterprise without considering the effects on the system as a whole. Overcoming suboptimization by creating incentives for integration and sharing will be essential to achieve more timely and equitable improvement in health outcomes.