Demographic, clinical and angiographic characteristics of patients
| Complete ipsilateral COW (n=65) | Incomplete ipsilateral COW (n=117) | P value | |
| Mean (SD) age, years | 59.6 (17.3) | 69.0 (13.9) | <0.001 |
| Female sex, no (%) | 31 (47.7) | 59 (50.4) | 0.759 |
| Baseline NIHSS >15, no (%) | 27 (41.5) | 68 (58.1) | 0.044 |
| ICA occlusion, no (%) | 22 (33.8) | 35 (29.9) | 0.619 |
| Good leptomeningeal collaterals, no (%) | 20 (44.4) | 27 (39.1) | 0.697 |
| Reperfusion, no. (%) | 48 (73.8) | 93 (79.5) | 0.459 |
| mRS 0–2 at 90 days, no (%) | 34 (52.3) | 54 (46.2) | 0.443 |
COW, circle of Willis; ICA, internal carotid artery; MRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale.