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Comparison of complications among patients in the two groups (n (%)).
| Group A (n = 36) | Group B (n = 36) | P | |
|---|---|---|---|
| Epidural infection | 0 (0) | 0 (0) | - |
| Epidural hematoma | 0 (0) | 0 (0) | - |
| Subarachnoid injection | 0 (0) | 0 (0) | - |
| Back pain | 4 (11.11) | 17 (47.22) | <0.05 |
| Nerve root irritation | 4 (11.11) | 12 (33.33) | <0.05 |
