Table 1.

Demographic data of two groups classified by preoperative embolization

	Group NE (n = 34)	Group E (n = 18)	P value
Age (year)	60.7 ± 12.6	57.7 ± 11.6	0.396
Sex	M:F = 21:13	M:F = 16:2	0.055
Hypervascular tumor	13/34 (38.2%)	10/18 (55.6%)	0.232
Preop. RTx	11/34 (32.4%)	7/18 (38.9%)	0.637
Bilsky scale (Gr1:Gr2:Gr3)	6:11:17	2:7:9	0.790
Preop. neurologic status (Gr)	2.7 ± 1.7	3.6 ± 1.4	0.058
SINS	8.2 ± 2.1	7.2 ± 1.8	0.070
Site (≥T5:<T5)	14:20	7:11	0.873
Karnofsky performance	64.1 ± 14.0	71.7 ± 12.0	0.058

Means and standard variation are shown for continuous variables, and the number of cases is shown for categorical variables

NE non-embolization, E embolization, Preop preoperative, RTx radiotherapy, SINS Spinal Instability Neoplastic Score, Gr grade