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Table 1 Demographic data of 258 evaluated hormone receptor-positive patients

From: HER4 expression in estrogen receptor-positive breast cancer is associated with decreased sensitivity to tamoxifen treatment and reduced overall survival of postmenopausal women

Clinicopathological parameter Premenopausal (n = 67) Postmenopausal (n = 191)
n % n %
Tumor stage
 I 32 48 111 58
 II 28 42 67 35
 III 4 6 8 4
 IV 0 0 0 0
 Unknown 3 4 5 3
Subtype
 Invasive ductal 56 84 151 79
 Invasive lobular 7 10 24 13
 Others 4 6 16 8
Grading
 1 5 7 25 13
 2 44 66 110 58
 3 17 25 52 27
 Unknown 1 1 4 2
Lymph node status
 0 30 45 116 61
 1 19 28 52 27
 2 10 15 13 7
 3 6 9 6 3
 Unknown 2 3 4 2
Endocrine treatment
 Tamoxifen 43 64 66 35
 Aromatase inhibitor 24 36 125 65
Surgery
 Mastectomy 27 40 51 27
 Breast-conserving therapy 40 60 140 73
Radiation
 Yes 50 75 151 79
 No 7 10 23 12
 Unknown 10 15 17 9
Cytotoxicity treatment
 Yes 56 84 85 44
 No 1 1 3 2
 Unknown 10 15 103 54