Table 1. Clinical characteristics of patients.
| Variables | PFW | |||
|---|---|---|---|---|
| Total | Yes | No | p value | |
| No. of patients | 54 | 6 | 48 | |
| Mean age ± SD (years) | 52.2 ± 11.6 | 64 ± 7.3 | 50.7 ± 11.2 | 0.007 |
| Sex, women | 31 (57.4%) | 3 (50%) | 28 (58.3%) | 1.000 |
| Side, left | 34 (63%) | 2 (33.3%) | 32 (66.7%) | 0.179 |
| Mean duration of symptoms ± SD (months) | 56.5± 54.3 | 142.8 ± 108.2 | 45.7 ± 31.7 | <0.001 |
| Hypertension | 13 (24.1%) | 3 (50%) | 10 (20.8%) | 0.143 |
| Dyslipidemia | 11 (20.4%) | 2 (33.3%) | 9 (18.8%) | 0.590 |
| Diabetes mellitus | 4 (7.4%) | 2 (33.3%) | 2 (4.2%) | 0.057 |
| HB grade | ||||
| I | 48 | 0 | 48 | |
| II | 6 | 6 | 0 | |
| Offending vessels | ||||
| AICA | 27 | 5 (83.3%) | 22 (45.8%) | |
| PICA | 10 | 0 | 10 (20.8%) | |
| VA | 2 | 0 | 2 (4.2%) | |
| Complex | 15 | 1 (16.7%) | 14 (29.2%) | |
AICA: anterior inferior cerebellar artery, HB grade: House–Brackmann grade, PFW: preoperative facial weakness, PICA: posterior inferior cerebellar artery, SD: standard deviation, VA: vertebral artery.