Clinical Analysis of Minimally Invasive Percutaneous Treatment of Severe Lumbar Disc Herniation with UBE Two-Channel Endoscopy and Foraminal Single-Channel Endoscopy Technique

Table 1

Comparison of two groups of general data.

Group	Age (year, )	Gender(male/female)	Protruding space
			L3/4 and L2/3	L4/5	L5/S1
UBE group ()		10/12	3	10	9
Interforaminal endoscopic group ()		13/15	5	12	11
^2	1.012	0.005	0.164
value	0.317	0.945	0.921