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

Table 1 Comparison of the general demographic characteristics between the control and observation groups

Group	Sex (M/F)	ASA (II/III)	Duration (mo)	Age (yr)	Body mass index
Observation group (n = 62)	35/27	25/37	7.42 ± 2.41	54.13 ± 5.12	23.99 ± 1.22
Control group (n = 58)	34/24	32/26	7.64 ± 2.52	54.34 ± 4.97	24.23 ± 2.33
χ2/t value	0.058	2.650	0.486	0.234	0.712
P value	0.810	0.104	0.628	0.815	0.478

ASA: American Sociological Association.