Table 5. Comparison of the ODI scores between the 2 groups.

Items	N (%)	Preoperative	3 months post-operation	6 months post-operation
Group A	103 (48.36)	34.55±2.12	25.50±2.65	16.05±2.84
Group B	110 (51.64)	34.75±2.08	22.05±3.71	15.66±3.08
t		–0.699	7.759	0.945
P value		0.485	<0.001	0.346

Data are represented as mean ± SD or n (%). Group A: underwent conventional C-arm fluoroscopy-assisted system alone intervertebral foraminoscopic surgery; Group B: underwent 3D CT navigation-assisted intervertebral foraminoscopic surgery. ODI, Oswestry disability index; t, t-test; 3D CT, 3-dimensional computed tomography.