| Numbers (N) of children | 
          | 
        Age (years) | 
         
      
        |   | 
          | 
        <2 | 
        2 | 
        3 | 
        4 | 
        5 | 
        6 | 
        7 | 
        8 | 
        9 | 
        10 | 
        11 | 
        12 | 
        13 | 
        14 | 
        15 | 
        16 | 
         
      
        | N selecting needle | 
         23     (20%) | 
        0 | 
        0 | 
        0 | 
        0 | 
        3 | 
        2 | 
        3 | 
        0 | 
        1 | 
        1 | 
        2 | 
        2 | 
        1 | 
        3 | 
        3 | 
        2 | 
         
      
        | N actually induced by    needle | 
         13     (56%) | 
        0 | 
        0 | 
        0 | 
        0 | 
        2 | 
        1 | 
        2 | 
        0 | 
        0 | 
        1 | 
        1 | 
        1 | 
        1 | 
        1 | 
        2 | 
        1 | 
         
      
        | N eventually induced by    mask | 
         10     (44%) | 
        0 | 
        0 | 
        0 | 
        0 | 
        1 | 
        1 | 
        1 | 
        0 | 
        1 | 
        1 | 
        1 | 
        1 | 
        0 | 
        1 | 
        1 | 
        1 | 
         
     
    ( Needle= intravenous induction of anesthesia; mask= inhaled induction of anesthesia) |