Figure 1. Example of feedback report given to each anesthesiologist. The rate of postoperative nausea and vomiting (adjusted for case mix) and use of the five promoted preventive measures were noted both in tabular and graphic form for the different time periods (e.g., baseline and education combined vs. first 3 months of the feedback). Comparison data were the three anesthesiologists whose patients had the lowest rate of postoperative nausea and vomiting.