Low-Dose Collagenase Chemonucleolysis Combined with Radiofrequency in the Treatment of Lumbar Disc Herniation: A 10-Year Retrospective Study

Table 2

Results of univariate analysis.

Patient’ characteristics	Classification	Cases	Excellent and good	Fair and poor	χ ^2	value
Sex	Male	84	71	13	1.912	0.167
	Female	42	39	3
Age (Y)	≤50	87	76	11	0.001	0.978
	>50	39	34	5
BMI (kg/m^2)	≤25	68	63	5	3.847	0.050^#
	>25	58	47	11
Course of disease (M)	≤12	72	69	3	11.364	0.001^#
	>12	54	41	13
Preoperative pain location	Low back and leg pain	109	94	15	0.975	0.323
	Leg pain	17	16	1
Preoperative numbness	No	45	37	8	1.571	0.092
	Yes	81	73	8
Preoperative muscle weakness	No	83	73	10	0.092	0.762
	Yes	43	37	6
Number of responsibility disc	1	102	94	8	9.278	0.002^#
	≥2	24	16	8
Preoperative NRS	4–6	64	58	6	1.306	0.253
	7–10	62	52	10
Preoperative JOA	≤10	70	59	11	0.173	0.677
	11–15	56	51	5
Smoking history	No	68	63	5	0.544	0.461
	Yes	58	51	7
Postoperative prolonged standing, sedentary, and bending over	No	81	68	13	2.512	0.113
	Yes	45	52	3
Postoperative engaging in physical works	No	86	73	13	1.552	0.213
	Yes	40	37	3
Postoperative strenuous activities	No	110	12	98	2.106	0.147
	Yes	16	12	4
Lumbar trauma history	No	121	106	15	0.220	0.639
	Yes	5	4	1
Lumbar surgery history	No	117	103	14	0.679	0.410
	Yes	9	7	2
Diabetes history	No	120	105	15	0.083	0.773
	Yes	6	5	1

Note: Chi-square values and values of the univariate analysis were calculated to compare the relationship between each factor and the therapeutic effect. #: , the corresponding factors were subjected to binary logistic multivariate regression analysis.