Frequencies observed  | 
       
      
           | 
        T =1   | 
        T = 0   | 
        Total  | 
       
      
         V= 1   | 
           | 
           | 
           | 
       
      
        D = 1   | 
        231  | 
        27  | 
        258  | 
       
      
        D = 0   | 
        32  | 
        54  | 
        86  | 
       
      
        V= 0   | 
        166  | 
        140  | 
        306  | 
       
      
        Total  | 
        429  | 
        221  | 
        650  | 
       
      
        Estimations of the weighted kappa coefficient  | 
       
      
        c  | 
         
  | 
        95% CI  | 
       
      
        0.1  | 
        0.594  | 
        (0.489 , 0.699)  | 
       
      
        0.2  | 
        0.584  | 
        (0.482 , 0.686)  | 
       
      
        0.3  | 
        0.575  | 
        (0.475 , 0.676)  | 
       
      
        0.4  | 
        0.567  | 
        (0.467 , 0.667)  | 
       
      
        0.5  | 
        0.558  | 
        (0.457, 0.659)  | 
       
      
        0.6  | 
        0.550  | 
        (0.447 , 0.652)  | 
       
      
        0.7  | 
        0.542  | 
        (1.437, 0.647)  | 
       
      
        0.8  | 
        0.534  | 
        (0.426 , 0642)  | 
       
      
        0.9  | 
        0.526  | 
        (0.412 , 0.637)  | 
       
      |