Variable Group FNB (n=98) Group FSNB (n=93) P
Patient Characteristics      
     Age, y 33 (15-54) 29 (14-50) 0.006*
     Height, cm 174 (150-193) 170 (152-193) 0.089
     Weight, kg 76 (44-113) 68 (49-113) 0.007*
     BMI, kg/m2 24.9 (18-34.9) 23.6 (18.4-33) 0.008*
     Female sex 42 (42.9%) 50 (53.8%) 0.149
Intraoperative data      
     Type of surgery     1.000
       Primary ACL 82 (83.7%) 77 (82.8%)  
       Revision ACL 16 (16.3%) 16 (17.2%)  
     Type of graft     0.013*
      Allograft 52 (53.1%) 32 (34.4%)  
Autograft 46 (46.9%) 61 (65.6%)  
     Duration of surgery, min 94 (50-272) 139 (60-282) <0.001*
Data are expressed as median (range) or count (%) where appropriate
*P<0.05
Table 1: Univariable analysis of baseline characteristics according to preoperative nerve block.