| General Anesthesia n = 37 | Lumbar sacral PB n = 38 | p value |
Transoperative dose (mg) | 44 ± 19 | 18.1 ± 6* | 0.000 |
Postoperative dose (mg) (3 days mean) | 43.4 ± 48 | 14.3 ± 30* | 0.002 |