Table 4.

Univariate analysis of clinical factors for recurrence in the patients

	Total number	Number of events	Events (%)	p value
Age				0.004
< 65	309	24	7.8
≥ 65	48	7	14.6
Smoking status				0.723
Yes	87	5	5.7
No	225	18	8
Menopausal status				0.943
Premenopausal	174	16	9.2
Postmenopausal	172	13	7.6
Early menarche				0.320
Yes	21	1	4.8
No	256	19	7.4
Nulliparity				0.820
Yes	51	4	7.8
No	236	18	7.6
Primary tumor locations				0.087
Right side	166	11	6.6
Left side	182	19	10.4
Bilateral	4	1	25
Stage at diagnosis				0.618
Stage 1 pT1a	19	0	0
Stage 1 pT1b	74	5	6.8
Stage 1 pT1c	232	22	9.5
Stage 2 pT2	27	4	14.8
Breast surgery				0.064
Lumpectomy	200	21	7
Mastectomy	51	10	19.6
Lymph node surgery				0.745
Sentinel node biopsy	269	19	7.1
Axillary LND	73	12	16.4
Adjuvant radiotherapy				0.142
Yes	297	23	7.7
No	38	8	21.1
Adjuvant chemotherapy				0.450
Yes	164	18	11
No	174	12	6.9
Adjuvant trastuzumab				0.578
Yes	31	3	9.7
No	18	2	11.1
Adjuvant endocrine therapy				0.372
Yes	275	25	9.1
No	60	5	8.3