| Study | Epidural analgesia | Peripheral nerve block | ||||
| Mean | SD | N | Mean | SD | N | |
| Nagaraja 2018 | 1.64 | 0.64 | 25 | 1.64 | 1.35 | 25 |
| Dohle 2001 | 2.75 | 2.88 | 20 | 1.95 | 1.43 | 20 |
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