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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)