Table 2.

Results of the univariate and multivariate analysis for loco regional cecurrence, according to patient and tumor characteristics.

Characteristics	Univariate			Multivariate
	HR	95% CI	P value	HR	95% CI	P value
Age (year)	1.0	0.97-1.03	0.99	0.99	0.96-1.03	0.87
Weight	0.97	0.93-1.02	0.3	0.97	0.92-1.03	0.4
Tumor size
*T1 = ≤ 2 cm
T2 = 2-5 cm	0.49	0.16-1.5	0.21	0.4	0.11-1.43	0.16
T3 = > 5 cm	0.87	0.29-2.55	0.8	0.57	0.15-2.09	0.39
Nodal Status
*N 0 = no involvement
N 1-3	0.81	0.21-3.02	0.75	0.32	0.05-1.91	0.21
N 4-9	1.52	0.48-4.79	0.46	0.26	0.02-3.23	0.3
N ≥ 10	0.51	0.11-2.28	0.37	0.09	0.007-1.37	0.08
Stage
*S1
S2	0.95	0.11-7.97	0.96	3.55	0.24-51.72	0.35
S3	1.52	0.2-11.55	0.68	13.18	0.35-485.9	0.16
Grade
*G1
G2	0.98	0.21-4.43	0.98	1.004	0.20-4.96	0.99
G3	1.18	0.25-5.38	0.83	1.14	0.23-5.48	0.87
Histologic type
* Ductal
Lobular	1.21	0.28-5.2	0.78	1.5	0.29-7.53	0.62

*The base groups in Cox analysis are T1, N 0, S1, G1 and Ductal carcinoma.