Patient demographics
| Demographics | All patients | VCS 0–1 | VCS 2 | p Value |
|---|---|---|---|---|
| Number | 27 | 13 | 14 | |
| Age (years), median (IQR) | 42 (24–58) | 44 (36–66) | 37 (15–54) | 0.24 |
| Female, n (%) | 14 (52) | 9 (69) | 5 (36) | 0.12 |
| Concurrent oral contraceptive use, n (%) | 3 (11) | 3 (23) | 0 | 0.1 |
| History of smoking, n (%) | 5 (19) | 0 | 5 (36) | 0.04 |
| Evidence of hypercoagulability, n (%) | 9 (33) | 4 (31) | 5 (36) | 1 |
| Initial symptoms, n (%) | 0.28 | |||
| Hemorrhage | 1 (4) | 0 | 1 (7) | |
| Focal neurological deficit without hemorrhage | 8 (30) | 5 (38) | 3 (21) | |
| Seizure | 2 (7) | 0 | 2 (14) | |
| Headache without hemorrhage | 8 (30) | 5 (38) | 3 (21) | |
| Trauma/post-surgical | 7 (26) | 2 (15) | 5 (36) | |
| Other | 1 (4) | 1 (8) | 0 | |
| Involvement of transverse sinus, n (%) | 19 (70) | 9 (69) | 10 (71) | 1 |
| Involvement of superior sagittal sinus, n (%) | 11 (41) | 4 (31) | 7 (50) | 0.44 |
| Involvement of straight sinus, n (%) | 1 (4) | 1 (8) | 0 | 0.48 |
| Treatment with heparin, n (%) | 23 (85) | 11 (85) | 12 (86) | 1 |
| Days from symptom onset to heparin, median (IQR) | 4 (2–20) | 3 (1–11) | 4 (3–28) | 0.06 |
| Treatment with endovascular thrombectomy, n (%) | 5 (19) | 4 (31) | 1 (7) | 0.17 |
| In-hospital mortality, n (%) | 5 (19) | 3 (23) | 2 (14) | 0.64 |
VCS, venous collateral scale.