Table 5.

Multivariate disease-free survival analysis for 24 Ewing sarcomas of the mobile spine (^a).

Variable	HR	95% CI	p-value
Decompressive surgery (b)	4.3	0.94–19.25	0.060
Year diagnosed
1986–1989			0.139
1990–1998	0.24	0.05–1.24	0.089
1999-present	0.18	0.03–1.19	0.076

^aHR = hazard ratio, CI = Confidence Interval.

^bWithout tumor excision.