Table 1.

Demographic and clinical features.

		Stabilization
		Yes, n = 43	No, n = 39	Test statistics and P-value
Age	Mean ± SD Total	53.09 ± 9.78	48.13 ± 10.17	t = 2.253* P = 0.027
		Mean ± SD = 50.73 ± 10.71
Sex	Male (n = 44, 53.7%) Female	n = 21, 47.7%	n = 23, 52.3%	χ2 = 0.845** P = 0.358
	(n = 38, 46.3%)	n = 22, 57.9%	n = 16, 42.1%
Fibrous tissue	Mild Moderate Severe	n = 0, %0	n = 11, 28.2%	χ2 = 39.588 P < 0.001
		n = 17, %39.5	n = 28, 71.8%
		n = 26, %60.5	n = 0, 0%
Lesion place	L4-L5	n = 3, 7%	n = 2, 5.1%	***
	L4-S1	n = 21, 58.8%	n = 14, 35.9%
	L5-S1	n = 3, 7%	n = 18, 46.2%	1
	L3-L5	n = 9, 20.9%	n = 2, 5.2%	2
	L2-L3	n = 0, 0%	n = 1, 5.2%

*Student’s t-test statistical value.
**Chi-square test statistical value.
 ***6 cells (50.0%) have expected count less than 5.