A new GAO report, “Value in Health Care: Key Information for Policymakers to Assess Efforts to Improve Quality While Reducing Costs,” examines the availability of evidence that various health care interventions (e.g., provider payment restructuring, chronic care management, patient safety initiatives, care transitions management, and prevention programs, and care coordination activities) impact the quality and cost of health care. In brief, the GAO found that at least some information on both cost and quality effects was available for about half of the 127 interventions examined. In many cases, however, the credibility of this information is questionable due to widespread reliance on studies that did not incorporate rigorous designs that could isolate the effect of an intervention from other factors. According to the GAO, the findings suggest that “successful efforts to encourage the widespread adoption of value-enhancing interventions will need to take into account a complex mix of factors, including leadership support, organizational culture, and staff resources, that facilitate the implementation of health care interventions across a wide range of organizational contexts.”