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Table 1 Patient characteristics

From: Novel serum protein biomarker panel revealed by mass spectrometry and its prognostic value in breast cancer

  Training set Validation set
Number of patients 92 95
Age median 59 58
Histologic type   
IDC 75 54
ILC 8 8
Other 9 33
Histologic grade   
G1 8 14
G2 33 31
G3 47 49
Missing 4 1
Tumor size   
T ≤2 cm 34 65
T >2 cm 55 30
Missing 3  
Estrogen receptor   
Positive 58 73
Negative 28 22
Missing 6  
Progesterone receptor   
Positive 48 73
Negative 41 22
Missing 3  
HER2 overexpression   
Positive 17 21
Negative 60 73
Missing 15 1
Lymph node involvement   
Positive 43 36
Negative 41 37
Missing 8 22
  1. HER2, human epidermal growth factor receptor 2; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma.