(A) BCa patients (n=144)              
   Age at diagnosis        
  Range Median Mean ± SDb        
  43-76 59.5 59.2 ± 9.7        
               
               
               
          Age group Tumour  size Nuclear grading Lymph nodes Total cases
  pT1–pT2 pT3–pT4 Lowc Highd Positive Negative 144 (100%)
≤50 49 0 48 1 4 45 49 (34.0)
51-69 65 14 66 13 29 50 79 (54.9)
≥70 14 2 15 1 1 15 16 (11.1)
               
               
(B) Healthy controls (n=152)              
  Age        
  Range Median Mean ± SD        
        
Age group  
≤50
51-69
≥70
44-77 Controls (n)
50
77
25
60.0 60 ± 9.26        
a BC: Breast cancer
b SD: Standard deviation; statistical analysis was tested by the Student’s t-test
c Low grade is defined as better differentiated type of tumor cells, including well differentiated type and moderately differentiated type
d High grade is defined as worse differentiated type of tumor cells, including poorly differentiated type and undifferentiated type
Table 1: Demographic and disease-related data on BC patients and control.