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Table 2 Comparative analysis of the immunohistochemical results of young and old patient groups

From: The ectopic expression of BRCA1 is associated with genesis, progression, and prognosis of breast cancer in young patients

Indicators

Young group (%)

Old group (%)

X2

P value

BRCA1

  

53.206

0.001*

—

37 (34.6)

72 (64.3)

  

+

13 (12.1)

30 (26.8)

  

++

38 (35.5)

10 (8.9)

  

+++

19 (17.8)

0 (0)

  

WWOX

  

4.610

0.203

—

14 (13.1)

15 (13.4)

  

+

56 (52.3)

56 (50.0)

  

++

32 (29.9)

27 (24.1)

  

+++

5 (4.7)

14 (12.5)

  

ER

  

3.867

0.276

—

36 (33.6)

31 (27.7)

  

+

48 (44.9)

48 (42.9)

  

++

16 (15.0)

28 (25.0)

  

+++

7 (6.5)

5 (4.5)

  

PR

  

5.215

0.157

—

49 (45.8)

67 (59.8)

  

+

48 (44.9)

34 (30.4)

  

++

7 (6.5)

7 (6.2)

  

+++

3 (2.8)

4 (3.6)

  

C-erbB2

  

4.012

0.235

—

63 (58.9)

81 (72.3)

  

+

15 (14.0)

12 (10.7)

  

++

18 (16.8)

9 (8.1)

  

+++

11 (10.3)

10 (8.9)

  

Ki67

  

2.128

0.546

<15%

43 (40.2)

50 (44.6)

  

≥15%

64 (59.8)

52 (55.4)

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