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Table 6 Mann–Whitney Test

From: Role of diffusion MRI in diagnosis of mediastinal lymphoma: initial assessment and response to therapy

  Ranks
Pathology N Mean rank Sum of ranks p value
ADC of paratracheal Hodgkin 5 4.00 20.00  
Non Hodgkin 2 4.00 8.00 1.000
Total 7    
ADC prevascular Hodgkin 6 4.50 27.00 0.134
Non Hodgkin 1 1.00 1.00  
Total 7    
ADC hilar Hodgkin 6 3.50 21.00  
Non Hodgkin 0a .00 .00
Total 6    
ADC value average Hodgkin 21 19.33 406.00  
Non Hodgkin 10 9.00 90.00 0.003
Total 31    
ADC mediastinal Mass average Hodgkin 22 14.48 318.50  
Non Hodgkin 10 20.95 209.50 0.046
Total 32    
ADC anterior mediastinal mass Hodgkin 7 5.14 36.00  
Non Hodgkin 5 8.40 42.00 0.123
Total 12    
  1. aMann–Whitney Test cannot be performed on empty groups