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Table 2 Results of ddCTC detection and statistical analysis

From: Mesenchymal and stemness circulating tumor cells in early breast cancer diagnosis

     Khi2 Barnet Woolf
Patient cohort characteristics negative
ddCTC
positive
ddCTC
P P
Number   37 24   
     NS NS
Histology Invasive ductal carcinoma 28 19   
  Invasive lobular carcinoma 8 3   
  Others 1 2   
     NS NS
Molecular Luminal A 32 21   
Characteristics Luminal B 2 1   
  Triple negative 2 2   
  Her2 overexpression 1 0   
     NS NS
Size tumour T1 17 12   
  T2 18 10   
  T3 and T4 2 2   
     0.05* < 0.05*
Lymph node N+ 13 3   
status      
  N- 24 21   
     NS NS
Tumor grade I 8 5   
  II 22 14   
  III 5 4   
  Unknown 2 1   
     ND ND
Hormonal ER+ 37 21   
status ER- 0 3   
     NS NS
  PR+ 28 18   
  PR- 9 6   
  1. Values of P for Khi2 and Barnet Woolf tests are indicated for each clinicopathological characteristics of tumors
  2. *significance level: P 0.05, NS: P > 0.05 for alpha risk 5%; ND: not determined
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