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Table 1 Comparative analysis of the clinicopathological parameters in the young groups and old groups

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

Parameters Young (n %) Old (n %) x2 P
Tumor size    7.053 0.029 *
≤2 cm 64 (35.4) 81 (43.5)   
>2 cm ≤5 cm 94 (51.9) 95 (51.1)   
>5 cm 23 (12.7) 10 (5.4)   
Pathological grading    21.354 0.0001*
I 4 (2.9) 19 (12.1)   
II 97 (69.3) 122 (77.7)   
III 39 (27.9) 16 (10.2)   
PTNM 18.290 0.0001*   
0~I 32 (17.7) 59 (31.7)   
II 89 (49.2) 97 (52.2)   
III 60 (33.1) 30 (16.1)   
Axillary lymph node metastasis    18.707 0.0001*
yes 106 (58.6) 67 (36.0)   
No 75 (41.4) 119 (64.0)   
Axillary lymph node    20.801 0.0001*
Transferring positive number     
0 75 (41.4) 119 (64.0)   
1~3 47 (26.0) 37 (19.9)   
4~9 28 (15.5) 16 (8.6)   
≥10 31 (17.1) 14 (7.5)   
  1. Note: *, P < 0.05.