Table 3.

Univariate analysis of prognostic factors for local recurrence and overall survival for ES of the mobile spine.

Variable	No. of patients	No. of local recurrences	10 year LR rate (%)	p-valuee	No. of deaths	10 year OS rate (%)	p-valuee
Gender				0.469			0.864
Male	15	4	35		7	58
Female	9	1	14		4	56
Age (years)				0.180			0.213
<14	5	0	0		1	80
>=14	19	5	36		10	51
Metastasis at presentation				0.312			0.962
No	19	5	31		9	57
Yes	5	0	0		2	50
Tumor sized				0.267			0. 791
<=8 cm	11	2	19		5	51
>8	4	2	50		2	50
Year of diagnosis				0.030			0.098
1986–1989	3	2	–		3	33
1990–1998	10	3	33		5	50
1999-to the present	11	0	0		3	63
Local treatment				0.300			0.079
Excisional surgery	2	0	0		0	100
Surgery + Radiotherapy	4	0	0		0	100
Definitive radiotherapy	18	5	39		11	43
Excisional surgery (a)				0.121			0.024
Yes	6	0	0		0	100
No	18	5	39		11	43
Margin (b)				N.A.			N.A.
R1	3	0	0		0	100
R0	3	0	0		0	100
Radiation dose				0.757			0.382
<45 Gy	8	2	29		3	63
>=45 Gy	13	2	17		7	43
Local recurrence				N.A.			0.007
Yes	5				5	20
No	19				6	33
Decompressive surgery (c)				0.061			0.105
Yes	9	4	42		7	22
No	15	1	75		4	62

LR = Local recurrence.

OS = Overall survival.

N.A . = Not Applicable.

^aExcisional surgery +/− radiotherapy.

^bIncludes only patients treated with excisional intent.

^cDoes not include patients treated with simultaneous excisional surgery.

^dData not available for all patients.

^eLog-rank test.