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Table 3 Percent agreement between academic readers and Veridex consensus (VC) overall and according to dataset, disease stage, circulating tumor cell (CTC) count and administration of systemic therapy before blood sample collection

From: International study on inter-reader variability for circulating tumor cells in breast cancer

  Agreement, %  
  Median Range P-value
All 92 69 to 97  
Dataset    
  Institute Jules Bordet 81 61 to 97 <0.001
  Institute Curie 97 73 to 99  
  University of Hamburg 94 69 to 98  
Stage    
  M0 91 70 to 96 <0.001
  M1 98 64 to 100  
CTC count    
  <5 CTCs 88 66 to 95 <0.001
  ≥5 CTCs 97 74 to 100  
Systemic therapy before blood sample collection    
  No 92 74 to 96 <0.001
  Yes 89 55 to 97  
  1. CTC, circulating tumor cell; M0, Non-metastatic, M1, metastatic.