Patient characteristics
| Patient characteristics | PNB or EBP (n=43) | Conservative treatment (n=7) |
| Median age (IQR) in years | 34 (29–36) | 33 (27–35) |
| ASA classification, n (%) | ||
| II | 43 (100.0) | 6 (85.7) |
| III | 0 (0.0) | 1 (14.3) |
| Technique, n (%) | ||
| Spinal | 20 (46.5) | 5 (71.4) |
| Epidural | 18 (41.9) | 1 (14.3) |
| CSE | 5 (11.6) | 1 (14.3) |
ASA, American Society of Anesthesiologists; CSE, combined spinal-epidural; EBP, epidural blood patch; PNB, peripheral nerve blocks.