“…For the purpose of our decision model, costs associated with nausea and vomiting were assumed to involve only the antiemetic drug costs and excluded nominal costs such as emesis basins. Given the current guideline recommendations to use an antiemetic agent from a different pharmacologic class in patients with postoperative nausea and vomiting who do not respond to the first drug, we assumed ondansetron and prochlorperazine, both generically available, as the antiemetic agents used in nausea and vomiting, respectively, and estimated these generic drug prices based on 50% of the average wholesale price…”