Survival Outcomes and Factors Associated with Revision Surgery for Metastatic Disease of the Spine

Table 3

Univariate regression analysis for undergoing revision surgery.

Variable	Odds ratio	p value	95% confidence interval
Age	1.007	.803	0.954	1.063
Race		>.999
Caucasian versus other	>999.999	.985	<0.001	>999.999
African American versus other	>999.999	.985	<0.001	>999.999
Asian versus other	>999.999	.984	<0.001	>999.999
Sex
Male versus female	0.915	.894	0.249	3.360
Smoker
Smoker versus nonsmoker	4.166	.052	0.987	17.589
Primary malignancy type		.956
RCC versus other	1.833	.904	0.346	9.719
Melanoma versus other	0.917	.924	0.073	11.577
Colorectal versus other	<0.001	.949	<0.001	>999.999
Breast versus other	3.667	.884	0.354	38.029
Multiple myeloma versus other	<0.001	.946	<0.001	>999.999
Lung versus other	1.222	.916	0.091	16.429
Preop. ambulatory status
IND/AMB assist versus wheelchair/bed rest	>999.999	.957	<0.001	>999.999
Radiation
Yes versus no	4.258	.187	0.495	36.659
Chemo
Yes versus no	0.146	.051	0.021	1.008
Extraspinal Mets
Presence versus absence	0.457	.282	0.110	1.901