Table 4.

Comparison means nausea score between two groups

Nausea score	Control (n=100)	Case (n=100)	P*	P**
At entrance to recovery ward	1.68±0.67	1.84±0.73	0.973	0.877
30 min after the surgery	1.50±0.69	1.71±0.92	0.899	0.899
2 h after the surgery	1.00±0.38	1.09±0.47	0.469	0.041
4 h after the surgery	0.80±0.58	0.98±0.56	0. 699	0. 026
6 h after the surgery	0.52±0.62	0.72±0.67	0.762	0.029
12 h after the surgery	0.27±0.46	0.47±0.45	0.642	0.002
24 h after the surgery	0.14±0.35	0.24±0.45	0.685	0.866
36 h after the surgery	0.07±0.26	0.12±0.27	0.565	0.735
48 h after the surgery	0.06±0.24	0.08±0.24	0.767	0.467
P***	<0.001	<0.001

*Using independent sample test for mean nausea score comparing two groups, **Using Univariate analysis test for mean nausea score comparing two groups with adjusted of the use of anti-nausea medicine, age, BMI, ***Using repeat measure analysis test for mean nausea score comparing during time each groups. BMI: Body mass index