Table 4: The postoperative fentanyl comsumption.

Group
Dosages
Group FOA
(n=47)
Group OA
(n=47)
P
Dosages of extra fentanyl (mcg) 1.91 ± 3.98
[0 - 10]
4.47 ± 7.17
[0 0 20]
0.035*
Dosages of total fentanyl (mcg) 31.91 ± 3.98
[30 - 40]
34.47 ± 7.17
[30 0 50]
0.035*
Numbers of injection (times) 0.19 ± 0.40
[0 - 1]
0.45 ± 0.72
[0 0 2]
0.035*

Results: mean ±SD; *p<0.05 analysis by Student’s t test