P1 P2 P3 P4 P Age (month) 77.2±17.7 66.4±17.9 72.6±15.8 75.4±21.6 NS Weight (Kg) 22.4±6.2 22.4±8.0 22.9±5.22 25±7.4 NS Male/Female 9/5 7/7 9/5 9/5 NS

Table 2: Demographics in each group of propofol. Data are mean ± SD or ratios. P<0.05 was considered statistically significant.