| Variables | 
        Outcome | 
        Frequencies | 
       
      
        | Age (n=60) | 
        Median    (Range) | 
        53.5(24-85) | 
       
      
        | Gender(n=60) | 
        Male | 
        43(71.7) | 
       
      
        | Female | 
        17(28.3) | 
       
      
        | Site (n=60) | 
        Buccal    Mucosa | 
        21(35) | 
       
      
        | Tongue | 
        16(26.7) | 
       
      
        | Other    Oral cavity sites | 
        13(21.6) | 
       
      
        | Larynx/pharynx | 
        10(16.7) | 
       
      
        | Habits (n=57)* | 
        Yes | 
        46(80.7) | 
       
      
        | No | 
        11(19.3) | 
       
      
        | T-stage (n=60) | 
        I | 
        7(11.7) | 
       
      
        | II | 
        17(28.3) | 
       
      
        | III | 
        4    (6.7) | 
       
      
        | IV | 
        32(53.3) | 
       
      
        | N-stage (n=60) | 
        N0 | 
        31(51.7) | 
       
      
        | N+ | 
        29(48.3) | 
       
      
        | M-stage (n=60) | 
        M0 | 
        55    (91.7) | 
       
      
        | M+ | 
        5(8.3) | 
       
      
        | Treatment (n=60) | 
        Surgery  | 
        33(55) | 
       
      
        | Pre    Chemo/RT/Surgery  | 
        27(45) | 
       
      
        Outcome (n=45) 
          Cohort    I* | 
        Alive  | 
        11(52.4) | 
       
      
        | Dead | 
        10    (47.6) | 
       
      
        | Cohort    II* | 
        Alive | 
        13(54.2) | 
       
      
        | Dead | 
        11(45.8) | 
       
      
        | Recurrence/Re-Recurrence    (n=48) | 
         
      
        | Cohort    I*
            | 
           No    recurrence | 
        11(54.2) | 
       
      
        | Recurrence | 
        13(45.8) | 
       
      
        | Cohort    II* | 
         No    Re-recurrence | 
        15(62.5) | 
       
      
        | Re-Recurrence | 
        9(37.5)  | 
       
      
        | Note:*    Information unavailable for the remaining patients | 
         
      |