Prognostic Significance of the Number of Removed and Metastatic Lymph Nodes and Lymph Node Ratio in Breast Carcinoma Patients with 1–3 Axillary Lymph Node(s) Metastasis

Table 2

Cox proportional hazards model analysis of the clinicopathological features and the number of removed lymph nodes in terms of disease-free survival.

Feature	Relative risk	%95 CI	P
Age, years			0.028
<35	1.00
≥35	0.65	0.45–0.95
Menopausal status			0.277
Premenopausal	1.00
Postmenopausal	0.86	0.66–1.12
Tumor size			<0.001
T1	1.00
T2	2.16	1.60–2.91
T3	2.89	1.95–4.27
Histological type			0.080
Invasive ductal	1.00
Invasive lobular	1.07	0.70–1.63
Invasive ductal and lobular	1.21	0.68–2.12
Other	0.32	0.13–0.79
Adjuvant chemotherapy			0.998
Yes	1.00
No	1.00	0.66–1.50
Adjuvant hormonal therapy			0.003
Yes	1.00
No	1.43	1.12–1.83
Adjuvant radiotherapy			0.001
Yes	1.00
No	1.61	1.20–2.17
Number of removed LN			0.022
1–5	1.00
≥6	0.67	0.47–0.94