Cost effectiveness ratio: an often misunderstood term.
D003362:Cost-Benefit Analysis; D004329:Droperidol / Q000627:therapeutic use; D017048:Health Care Costs; D006801:Humans; D009325:Nausea / Q000517:prevention & control*; D017294:Ondansetron / Q000627:therapeutic use; D011183:Postoperative Complications / Q000517:prevention & control*; D014839:Vomiting / Q000517:prevention & control*