| 
          
          Study groups              | 
         
      
          
          Control group I 
            n=25  | 
        PIU group 
          n=25  | 
        Alcohol group 
          n=25  | 
        Control group II 
          n=25            | 
         
      
        Mean  | 
        SD  | 
        Mean  | 
        SD  | 
        Mean  | 
        SD  | 
        Mean  | 
        SD  | 
       
      
        ISS Global score  | 
        24.88***  | 
        6.62  | 
        53,87***  | 
        13,25  | 
        24,83  | 
        12,35  | 
        23,79  | 
        5,64  | 
       
      
        ISS Loss of control  | 
        5.28***  | 
        2.01  | 
        12.17***  | 
        3.33  | 
        5.63  | 
        3.06  | 
        5.13  | 
        1.80  | 
       
      
        ISS Withdrawal  | 
        4.28***  | 
        .74  | 
        10.29***  | 
        3.22  | 
        5.04  | 
        2.87  | 
        4.42  | 
        1.14  | 
       
      
        ISS Tolerance  | 
        6.56***  | 
        2.95  | 
        12.64***  | 
        3.29  | 
        5.21  | 
        3.22  | 
        5.92  | 
        2.84  | 
       
      
        ISS Social consequences  | 
        4.36***  | 
        1.08  | 
        10.33***  | 
        3.68  | 
        4.42  | 
        2.04  | 
        4.25  | 
        .74  | 
       
      
        ISS Professional consequences  | 
        4.40***  | 
        1.44  | 
        8.32***  | 
        3.57  | 
        4.54  | 
        1.98  | 
        4.08  | 
        .28  | 
       
      
        BIS Global Score  | 
        32.92***  | 
        4.72  | 
        37.91  | 
        6.51  | 
        36.25**  | 
        6.01  | 
        31.96  | 
        4.42  | 
       
      
        BIS            Inattention  | 
        7.04***  | 
        2.32  | 
        12.16  | 
        4.57  | 
        10.83***  | 
        4.19  | 
        6.64  | 
        2.25  | 
       
      
        BIS Motor impulsivity  | 
        11.76  | 
        2.99  | 
        13.32  | 
        3.35  | 
        12.83*  | 
        3.52  | 
        10.80  | 
        2.40  | 
       
      
        BIS Lack of  
          Planning/anticipation  | 
        13.32  | 
        2.66  | 
        14.12  | 
        2.13  | 
        12.58**  | 
        2.22  | 
        14.52  | 
        1.94  | 
       
     
      * The marking of a statistically significant difference refers to a comparison with the next column/group. 
    (*p<0.05;**p<0.01; ***p<0.001)
  |