|  
           | 
        Men+Tdap+HPV | 
        Placebo+Tdap+HPV | 
        Total | 
       
      
        |   | 
        n=402 | 
        n=399 | 
        N=801 | 
       
      
        | Age (Yrs) | 
        11.9 ± 1.7 | 
        11.8 ± 1.5 | 
        11.9 ± 1.6 | 
       
      
        | Sex | 
          | 
          | 
          | 
       
      
        | Male | 
        233 (58%) | 
        244 (61%) | 
        477 (60%) | 
       
      
        | Female | 
        169 (42%) | 
        155 (39%) | 
        324 (40%) | 
       
      
        | Race | 
          | 
          | 
          | 
       
      
        | Asian | 
        5 (1%) | 
        7 (2%) | 
        12 (1%) | 
       
      
        | Black, Non-Hispanic | 
        39 (10%) | 
        36 (9%) | 
        75 (9%) | 
       
      
        | White, Non-Hispanic | 
        319 (79%) | 
        310 (78%) | 
        629 (79%) | 
       
      
        | Native American/Alaskan | 
        1 (<1%) | 
        2 (<1%) | 
        3 (<1%) | 
       
      
        | Pacific/Hawaii | 
        0 | 
        2 (<1%) | 
        2 (<1%) | 
       
      
        | Other | 
        38 (9%) | 
        42 (11%) | 
        80 (10%) | 
       
      
        | Weight (kg): | 
        50.4 ± 15.7 
          (n=400) | 
        50.6 ± 15.3 
          (n=398) | 
        50.5 ± 15.5 
          (n=798) | 
       
      
        | Height (cm): | 
        153.3 ± 11.7 
          (n=400) | 
        152.9 ± 11.3 
          (n=398) | 
        153.1 ± 11.5 
          (n=798) | 
       
      
        | Body Mass Index: |  
        21.1 ± 4.7 
          (n=400) | 
        21.4 ± 5.0 
          (n=398) | 
        21.2 ± 4.8 
          (n=798) | 
       
      |