Table 2.

Clinical outcomes of OLIF group and TLIF group

	OLIF group (n = 36)	TLIF group (n = 36)	P value
VAS-B
Preoperative	6.89 ± 2.01	7.01 ± 1.98	0.684
At the last follow-up	1.84 ± 0.71	2.03 ± 0.93	0.258
VAS-L
Preoperative	8.42 ± 1.50	8.62 ± 1.39	0.925
At the last follow-up	1.90 ± 0.89	2.05 ± 0.92	0.525
ODI
Preoperative	68.58 ± 8.18	66.32 ± 10.42	0.602
At the last follow-up	10.54 ± 5.39	12.66 ± 6.83	0.452
Incidence of ASDis at the last follow-up	1/36 (2.78%)	2/36 (5.56%)	1.000