|    | 
        operation time(min) | 
        blood loss(ml) | 
        postoperative pain socres | 
        hospital stay(d) | 
       
      
        | LS | 
        150±37 | 
        46±28 | 
        1 | 
        6.5±1.5 | 
       
      
        | Conventional open splenectomya | 
        186±45 | 
        100±22 | 
        3.5±0.5 | 
        9.5±1.5 | 
       
      
        | P value | 
        <0.05 | 
        <0.05 | 
        <0.05 | 
        <0.05 | 
       
      
        | a Conventional open    splenectomy for HS: a retrospective analysis of the perioperative data  of the last six non-complicated cases    undergone conventional open splenectomy for HS dated before 1 Aug 2003   | 
       
      
     
     |