. Author manuscript; available in PMC: 2016 Jan 31.

Published in final edited form as: J Oral Maxillofac Surg. 2014 Aug 11;73(2):324–332. doi: 10.1016/j.joms.2014.08.007

Table 1.

Comparison of demographic and surgery-related traits between comparison and intervention cohorts

Trait	Comparison Cohort n (%)	Intervention Cohort n (%)	P value
Female	89 (65%)	54 (58%)	0.29
Caucasian	95 (71%)^*	67 (72%)	0.85
Bimaxillary surgery	82 (60%)	56 (60%)	0.96
Segmental LeFort	46 (34%)	29 (31%)	0.70
3^rd molars removed	60 (44%)	46 (49%)	0.40
Genioplasty	52 (38%)	33 (35%)	0.70
Surgery time > 180 minutes	81 (59%)	59 (63%)	0.51
	Median (IQR)	Median (IQR)
Age	20 (17–24)	19 (17–23)	0.75

Risk factors^ǂ	Comparison Cohort n (%)	Intervention Cohort n (%)	P value
0 or 1	43 (31%)	37 (40%)	0.34
2	73 (53%)	42 (45%)
3+	21 (15%)	14 (15%)

^ǂ

Risk factors include female gender, non-smoking status, history of migraines, history of PONV, and history of motion sickness.

Data missing for 3 subjects