Table 4.

P-Values of Associations Between Risk Factors and Outcomes Including Number of Episodes of Nausea, Number of Doses of Antiemetics, and Number of Different Antiemetic Medications

Risk factor	Episodes of nausea	Doses of antiemetics	Number of different medications
Number of risk factors per patient	0.6107	0.2292	1.0
History of motion sickness	0.9065	0.9158	0.8200
Nonsmoker	0.0394a	0.0347a	1.0
Age <40 years	0.3962	0.4395	0.6992
Surgery >12 hours	0.6984	0.3406	0.2959
Immediate reconstruction	0.9696	0.1330	1.0
Preoperative antiemetic use	0.7872	0.8085	0.5096
Intraoperative antiemetic medication types	0.7295	0.8553	0.9345
Intraoperative antiemetic numbers of doses	0.4725	0.7206	1.0
Intraoperative propofol use	0.8770	0.7314	0.6752
Any prophylaxis	0.5887	0.8052	1.0

^aStatistically significant, P <0.05.