Table 3 Comparison of pathological types and cell differentiation grades across breast cancer subgroups

Patients, n

152

18

20

38

190

Pathologic types, n

 Invasive ductal carcinoma

116

11

15

26

142

 Ductal carcinoma in situ

21

6

4

10

31

 Mucinous carcinoma

8

0

1

1

9

 Intraductal papillary carcinoma

5

1

0

1

6

 Medullary carcinoma

2

0

0

0

2

X² = 3.89

P > 0.05

X² = 0.74

*P > 0.05

X² = 4.69

**P > 0.05

X² = 0.85

^#P > 0.05

Cell differentiation, n

 Grade I/high-level

11

3

1

4

15

 Grade II/middle-level

89

12

9

21

110

 Grade III/low-level

52

3

10

13

65

X² = 0.48

P > 0.05

X² = 3.43

*P > 0.05

X² = 1.91

**P > 0.05

X² = 5.11

^#P > 0.05