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Table 1 Clinical and pathological characteristics of AA and CAU breast cancer in Atlanta

From: Enhanced down-regulation of ALCAM/CD166 in African-American Breast Cancer

Characteristics CAU (n = 95) AA (n = 78) p value
n % n %  
Age at diagnosis      0.99
≤ 50 years 29 30.5 23 29.5  
> 50 years 66 69.5 55 70.5  
Histological type      0.003*
Ductal 74 77.8 76 97.4  
Lobular 7 7.4 2 2.6  
Ductal/Lobular 7 7.4 0   
Missing 7 7.4    
Histological grade      0.069
G1 29 30.5 16 20.5  
G2 44 46.3 29 37.2  
G3 17 17.9 24 30.8  
Missing 5 5.3 9 11.5  
Tumor size      0.026*
T1 69 72.6 34 43.6  
T2 15 15.8 20 25.6  
T3-T4 6 6.3 7 9.0  
Missing 5 5.3 17 21.8  
Lymph node status    0.68
Negative 48 50.5 38 48.7  
Positive 25 26.3 23 29.5  
Missing 22 23.2 17 21.8  
AJCC stage      0.65
I 40 42.1 28 35.9  
II 22 23.2 18 23.1  
III-IV 11 11.5 12 15.4  
Missing 22 23.2 20 25.6  
ER status      0.001*
Negative 15 15.8 30 38.5  
Positive 70 73.7 45 57.7  
Missing 10 10.5 3 3.8  
PR status      0.081
Negative 28 29.5 34 43.6  
Positive 57 60 41 52.6  
Missing 10 10.5 3 3.8  
HER2-neu status      0.13
Negative 67 70.5 65 83.4  
Positive 19 20 9 11.5  
Missing 9 9.5 4 5.1  
Triple negative      0.0008*
Yes 10 10.5 25 32.0  
No 74 77.9 51 65.4  
Missing 11 11.6 2 2.6  
  1. AJCC: American Joint Committee on Cancer; CAU: Caucasian; AA: African-American; ER/PR: estrogen/progesterone receptor; HER2-NEU: human epidermal growth receptor 2. *Age-adjusted.