Table 3.

Distribution of clinicopathologic characteristics according to recurrence score risk group

	Recurrence score risk group			p-value
	Low	Intermediate	High
Tumor size (cm)
< 1	12	4	3	0.311
≥ 1 and < 2	77	29	8
≥ 2	43	27	9
Histologic type
Ductal	116	53	18	0.415
Lobular	3	4	0
Others	13	3	2
Histologic grade
1	32	7	0	< 0.001
2	85	42	9
3	12	10	11
Nodal status
N0	122	56	14	0.004
N1mi	10	4	6
Lymphatic invasion
No	90	43	7	0.012
Yes	25	14	9
Ki-67 (%)
< 14	93	36	6	0.002
≥ 14	29	19	11