| Variable  | 
        Paracetamol    group (n=40)  | 
        Placebo group (n=40)  | 
        P-value  | 
       
      
        | Age(year)  | 
        31.1 ± 4.2  | 
        28.6 ± 4.7         | 
        0.12  | 
       
      
        | Weight(kg) | 
        69.5 ± 10.1 | 
        66.0 ± 10.5         | 
        0.14 | 
       
      
        | ASA    Class(I/II) | 
        28/12 | 
        26/14         | 
        0.32 | 
       
     
    
    Data are presented as mean ± SD; ASA Class: American Society of anesthesiologist
    Classification |