|  | Group BS | Group BF | Group BC | 
      
        | Sensory block • Time    to reach T12(mins)
 • Highest    Block
 Operative limb
 Non operative limb
 • Time    to regress to L2 level (mins)
 
 | 9.5 ± 1.84
 T10 (T6-11)
 L3 (T12-S3)
 
 133  ± 18.03
 | 9.8 ± 1.84
 T10 (T7-12)
 L3 (T12-S1)
 
 187  ± 14.39
 | 10.0 ± 1.60
 T10 (T6-11)
 L2 (T12-S1)
 
 181.6  ± 17.57
 | 
      
        | Motor block (bromage    scale) 0/1/2/3
 • Operative    limb
 • Non    operative limb
 
 | 
 1/0/5/34
 30/5/4/1
 | 
 0/1/3/36
 32/4/2/2
 | 
 1/2/0/37
 30/6/2/2
 | 
      
        | Time of complete    recovery of motor block (min) | 186.88 ± 10.97 | 198.03  ± 12.59 | 250.00  ± 28.77 | 
      
        | Unilateral Block At 20 mins
 At 40 mins
 | 29 (73%)
 26 (65%)
 | 30 (75%)
 28 (70%)
 | 29 (73%)
 27 (68%)
 | 
      
        | Surgical anaesthesia    (Adequate/Inadequate/failed) | 37/2/1 | 38/2/0 | 36/3/1 | 
      
        | Time of Ist analgesic    need (mins) | 245.35  ± 26.60 | 324.45  ± 23.57 | 318  ± 22.29 | 
      
        | Time of spontaneous    urination (mins) | 398.35  ± 16.60 | 408.43 ± 18.00 | 1.36± 16.69 |