Table 1.

Patient, Procedural, and Pharmacological Variables

		N (%)	Range	Mean ±sd	Median [IQR]
Risk factors per patient	3	2 (6.9%)	2–6	3.6 ±0.9	3 [3–4]
	4	13 (44.8%)
	5	10 (34.5%)
	6	3 (10.3%)
	7	1 (3.5%)
Risk Factors	Female	29 (100%)
	Breast surgery	29 (100%)
	Opioid therapy	29 (100%)
	History of nausea/motion sickness	12 (41.4%)
	Nonsmoker	19 (65.5%)
	Age <40 years	6 (20.7%)	31–72	49.5 ±11.9	48 [40–58]
	Surgery >12 hour long	9 (31.0%)	6–14.5	10.1 ±2.5	10 [8–12.5]
	Inhalational anesthetic use	23 (79.0%)
Procedure type	Bilateral delayed	1 (3.5%)
	Bilateral immediate	8 (27.6%)
	Bilateral staged	3 (10.3%)
	Immediate and delayed	3 (10.3%)
	Unilateral delayed	4 (13.8%)
	Unilateral immediate	7 (24.1%)
	Unilateral staged	3 (10.3%)
Preoperative antiemetic use		12 (41.4%)
Intraoperative antiemetic medication types	None	6 (20.7%)	0–2	1.1 ±0.7	1 [1–2]
	1	14 (48.3%)
	2	9 (31.0%)
Intraoperative antiemetic doses	None	6 (20.7%)	0–3	1.2 ±0.9	1 [1–2]
	1	13 (44.8%)
	2	8 (27.6%)
	3	2 (6.9%)
Any prophylaxis	No	3 (10.3%)
	Yes	26 (89.7%)
	Preop only	3 (10.3%)
	Intraop only	14 (48.3%)
	Both	9 (31.0%)