Table 1.

Pathological Characteristics of Patients Enrolled

Characteristics	Patient Counts
Age (Year)
≥60	62
40–60	195
≤40	83
Menstrual Status
Pre-menopause	199
Post-menopause	141
Pathological Type
Invasive ductal carcinoma	301
Invasive lobular carcinoma	11
Others	28
Pathological Grade
I	30
II	181
III	129
PR Status
≥1%	314
<1%	26
HER2 Status
Negative	244
Positive	73
Unknown	23
Ki67
≥14	206
<14	134
TNM Stage
I	90
II	140
IIIA	37
IIIB	12
IIIC	18
IV	43
Endocrine Therapy History
Yes	41
No	299