Shared Decision-making in the U.S.: Evidence exists, but implementation science must now inform policy for real change to occur.

Shared decision making (SDM) is defined as an approach in which clinicians and patients share the best available evidence when faced with the task of making decisions, and in which patients are supported to consider options to achieve informed preferences [1]. Over the past decade, SDM has been increasingly recognized as a component of value-based care in the US. There is greater acceptance overall that SDM is a key strategy for achieving patient-centered care, enhancing patient safety, and achieving the triple aim of better health, better care, and lower costs [2]. Essential elements of SDM include recognizing and acknowledging that a decision is required; knowing and understanding the best available evidence on risks and benefits; and incorporating the patient's values and preferences into the decision [3]. This paper provides an update of our previous review of SDM in the US published in 2017. We describe changes in healthcare policies to support SDM at the federal and state levels, the integration of SDM into clinical practice, and the role of implementation science to advance SDM. Finally, we discuss potential next steps to inform policies for SDM and facilitate uptake of SDM in clinical practice.