Table 2 POU5F1/Oct-4 expression in groups classified by different characteristics

Age

0.579

 <40

26

12

14

 40–60

72

37

35

 >60

23

9

14

Tumor size

0.873

 T1 (Tis)

73

35

38

 T2

45

22

23

 T3

3

1

2

Histological grade

0.001**

 I

20

17

3

 II

89

38

51

 III

12

3

9

Pathology classification

0.216

 DCIS

25

15

10

 IDS

85

36

49

 Mucinous carcinoma

9

5

4

 Paget’s disease

2

0

2

Molecular classification

0.030*

 Luminal A

44

16

28

 Luminal B

25

12

13

 Basal-like

46

29

17

 HER-3+

6

1

5

Lymph node metastasis

0.003*

 pN₀

83

48

35

 pN₁

33

10

23

 pN₂

5

0

5