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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.