Table 6.

Multivariate linear regression analysis for tumor recurrence

	Unstandardized coefficients		Standardized coefficient (β)	t	OR	Significance
	B	SE
Etiology	0.04	0.04	0.09	1.01		0.314
En bloc	−0.23	0.08	−0.24	−2.80	0.78	0.006
WBB depth	0.00	0.08	0.00	−0.06		0.953
WBB size	0.05	0.05	0.10	1.21		0.23
Number of levels	−0.04	0.05	−0.07	−0.8		0.423

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