Percutaneous Endoscopic Lumbar Discectomy Assisted by O-Arm-Based Navigation Improves the Learning Curve

Table 1

Patient demographics of group A and group B.

	Group A	Group B	P Value
Gender (male: female)	39:19	37:23	0.527
Age (years)	45.19 ± 13.63	42.43 ± 12.36	0.252
BMI (kg/m^2)	24.42 ± 4.14	23.76 ± 3.80	0.372
Follow-up Time (months)	8.90 ± 1.46	9.02 ± 1.48	0.658
Levels			0.655
L3-4	2	2
L4-5	26	22
L5-S1	30	36

BMI: body mass index.