Table 4.

Cox Logistics Regression Analysis of Factors Related to Instrumentation Failure

Risk Factor	B	HR(95% CI)	p-value
Total vertebral body resection
Y	2.152	8.600 (1.101–67.197)	0.040
N
Vertebral resection segment
Single section	1.479	4.389 (1.338–14.402)	0.015
Multiple segments
Radiotherapy
Y	1.327	3.771 (1.429–9.952)	0.007
N
Multiple tumors
Y	0.420	1.522 (0.567–4.083)	0.404
N

Note: Bold values indicate statistically significant values.