Table 3.

Multivariate model to determine predictors of surgical candidacy

VARIABLE	PVALUE	ADJUSTED ODDS RATIO	95% CONFIDENCE INTERVAL
Sex	.38	1.11	0.88–1.38
Age (per 10-y increase)	< .01	3.33	3.32–3.33
Degenerative disk	.09	0.76	0.56–1.05
Disk herniation	< .01	1.49	1.16–1.89
Spinal stenosis	< .01	1.61	1.26–2.05
Instability	< .01	2.83	2.08–3.88
Spinal deformity	.12	2.65	0.76–9.17
Previous surgery	.70	0.93	0.63–1.37
No. of levels (per level affected)	< .01	0.79	0.71–0.88