Table 1.

Clinical outcomes in Groups A and B

	Group A	Group B
Bleeding (ml)#	315 ± 84	532 ± 105
Operation time (min)#	107 ± 34	158 ± 55
Total cost (US$)#	13,830 ± 2640	16,020 ± 3380
VAS*
Preoperative	7.7 ± 2.1	7.5 ± 1.6
Final Follow-Up	1.4 ± 0.7	1.6 ± 0.8
ODI*
Preoperative	65.3 ± 11.6	62.2 ± 8.2
Final Follow-Up	13.5 ± 5.7	14.7 ± 7.3

^#P < 0.05 between Groups A and B

*P < 0.05 between preoperative score and final follow-up score in both Groups A and B

VAS, Visual Analog Scale; ODI, Oswestry Disability Index