Acupuncture at the P6 Acupoint to Prevent Postoperative Pain after Craniotomy: A Randomized, Placebo-Controlled Study

Table 4

The incidence of vomiting over time.

	Acupuncture group (N = 58)	Sham acupuncture group (N = 59)	values
Vomiting in 0–24 h after operation			0.048
No (%)	50 (86.2)	42 (71.2)
Yes (%)	8 (13.8)	17 (28.8)
Vomiting in 24–48 h after operation			0.969
No (%)	49 (84.5)	50 (84.7)
Yes (%)	9 (15.5)	9 (15.3)
Vomiting in 48–72 h after operation			1.000
No (%)	54 (93.1)	54 (91.5)
Yes (%)	4 (6.9)	5 (8.5)