Table 8. The relationship between pathological molecular types and lymph node metastasis.

Molecular Types	n/N	Metastasis rate %	χ2	P
Her-2 positive	193/476	40.5	3.585	0.465
Luminal A	350/784	44.6
Luminal B1	15/39	38.5
Luminal B2	88/204	43.1
Triple negative	229/560	40.9