Extraordinary growth in managed care arrangements over the past decade has been both widely praised and criticized. Proponents and critics agree that the nature of medical practice is being profoundly altered by this growth, even if they cannot articulate the direction and consequences of this...

To provide better value and improve patient care in the U.S. health care system, comparative effectiveness research (CER) needs to be disseminated, implemented, and interpreted. This brief, the second from Mathematica’s Center on Health Care Effectiveness, examines how to put CER into use at...