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Table 4 Patient tumor characteristics

From: Serum microRNA expression as an early marker for breast cancer risk in prospectively collected samples from the Sister Study cohort

Tumor characteristic Number Percentage
Tumor classification   
    T1 141 68.78
    T2 45 21.95
    T3 5 2.44
    TX 14 6.83
Lymph node status   
    pN0 153 74.63
    pN1 38 18.54
    pN2 9 4.39
    pN3 4 1.95
    pNX 1 0.49
Metastasis   
    None 202 98.54
    Any 3 1.47
Stage   
    I 117 57.07
    II 59 28.78
    III or higher 13 6.34
    Could not stage 16 7.80
Estrogen receptor-alpha   
    ERα+ 165 80.49
    ERα 37 18.05
    Missing 3 1.46
Progesterone receptor   
    PR+ 138 67.32
    PR 61 29.76
    Missing 6 2.93
HER-2/NEU   
    No overexpression 147 71.71
    Overexpression 25 12.20
    Missing 33 16.10
  1. Breast cancer staging in the Sister Study used a modification of TNM 7 [66].