Table 5.

Multivariate linear regression analysis for postoperative complications

	Unstandardized coefficients		Standardized coefficient (β)	t	OR	Significance
	B	SE
Age	0.07	0.05	0.14	1.32		0.191
Etiology	−0.04	0.13	−0.04	−0.33		0.745
Approach	−0.05	0.07	−0.08	−0.74		0.462
En bloc	0.22	0.08	0.3	2.62	1.35	0.01
WBB depth	0.03	0.08	0.04	0.33		0.743
WBB size	0.01	0.05	0.03	0.26		0.799
Number of levels	0.09	0.04	0.22	2.2	1.25	0.031

SE – Standard error, OR – Odds ratio, WBB – Weinstein-Boriani-Biagini