Specific aim and key driver diagram for the ADEQC. The baseline was not officially determined until February 2010, when reporting of ADEs peaked as the full impact of the safety program was felt. The key drivers are barriers that must be overcome to impact the specific aim. Typically, key drivers are expressed as elements that must be addressed to achieve the specific aim; however, the key driver diagram as presented here is what we used to drive change. CTICU, cardiothoracic intensive care unit; PDSA, plan-do-study-act.