Optimal approach for total endoscopic discectomy and its effect on lumbar and leg function in patients with disc herniation

Table 5 Comparison of pain between the control and observation groups

Group	Lower back VAS (points)		Leg VAS (points)
	Before therapy	4 wk of therapy	Before therapy	4 wk of therapy
Observation group (n = 62)	6.02 ± 1.81	2.18 ± 0.88	7.87 ± 1.82	1.42 ± 0.50
Control group (n = 58)	6.03 ± 2.79	3.53 ± 0.50	7.78 ± 2.93	2.21 ± 0.52
t value	0.043	10.292	0.215	8.464
P value	0.966	0.000	0.830	0.000

VAS: Visual analog scale.