|   | 
        Group    MR (With MR) n=52 | 
        Group    Non-MR (Without MR) n=48 | 
        p-value | 
       
      
        | Age    (yrs) | 
        37.6(12) | 
        35.9(12) | 
        0.5 | 
       
      
        | Weight    (kgs) | 
        62.2(11) | 
        61(11) | 
        0.5 | 
       
      
        | Sex | 
       
      
        | Male | 
        28(53.8) | 
        30(62.5) | 
        0.4 | 
       
      
        | Female | 
        24(46.2) | 
        18(37.5) | 
           | 
       
      
        | Duration    of surgery (min) | 
        207(73) | 
        217(81) | 
        0.5 | 
       
      
        | Duration    of attempts (sec) | 
        50(16) | 
        68.3(31) | 
        0.0001 | 
       
      
        | Number    of attempts | 
        1.1(0.3) | 
        1.5(0.6) | 
        0.0001 | 
       
      
        | Total    intubation time (sec) | 
        60.1(37) | 
        133(100) | 
        0.0001 | 
       
      
        | Airway    pressure (cm H2O) | 
        16.4(2.5) | 
        16.5(2.8) | 
        0.82 | 
       
      
        | End    tidal carbondioxide | 
        33.2(1.8) | 
        33.7(2.1) | 
        0.23 | 
       
      
        | Surgical    position | 
       
      
        | Prone | 
        47(90.4) | 
        45(93.8) | 
        0.6 | 
       
      
        | Supine | 
        4(7.7) | 
        3(6.3) | 
          | 
       
      
        | Others | 
        1(1.9) | 
        0(0) | 
          | 
       
      |