Table 1. Demographic characteristics of the P6 and control groups .

Variable	Group		p (t-test)
	P6	Control
Age (year)	30.32 (14.03)	29.66 (13.96)	0.81
Body mass index (kg/m2)	22.78 (4.12)	22.00 (4.13)	0.36
Incision length (mm)	60.39 (13.24)	56.17 (11.98)	0.95
Duration of anesthesia (min)	84.89 (20.72)	85.45 (16.97)	0.61

Values are expressed as mean (SD).