Cohort demographics and clinical characteristics (N = 53)
| Variables | No. (%) |
|---|---|
| Age at onset of symptoms (yr) | |
| Mean (SD) | 35.5 (10.8) |
| Range | 12–76 |
| Sex | |
| Male | 16 (30.2) |
| Female | 37 (69.8) |
| Symptom duration (mo) | |
| Mean (SD) | 35.8 (49.7) |
| Range | 0–205 |
| CSF leak type | |
| Axilla of nerve root sleeve | 36 (67.9) |
| Pedicle | 4 (7.6) |
| Shoulder of nerve root sleeve | 13 (24.5) |
| CSF leak sidea | |
| Left | 27 (46.6) |
| Right | 31 (53.4) |
| CSF leak levela | |
| Cervical | 3 (5.7) |
| Thoracic 4–6 | 4 (7.8) |
| Thoracic 7–9 | 13 (24.5) |
| Thoracic 10–12 | 31 (58.5) |
| Lumbar | 2 (3.8) |
↵a From a total of 58 CSF leak sites.