Comparison of clinical and imaging characteristics between symptomatic and asymptomatic occlusions
| Total (n=149) | Asymptomatic occlusion (n=37) | Symptomatic occlusion (n=112) | P value | |
| Sex (Females), n (%) | 35 | 4 (10.81%) | 31 (27.68%) | 0.037 |
| Age, years | 60.43±12.83 | 56.62±10.81 | 61.69±13.23 | 0.037 |
| Risk factors, n (%) | ||||
| Hypertension | 88 | 21 (56.76%) | 67 (59.82%) | 0.743 |
| Diabetes | 30 | 10 (27.03%) | 20 (17.09%) | 0.229 |
| Lipid disorders | 44 | 9 (24.32%) | 35 (31.25%) | 0.425 |
| Coronary artery disease | 21 | 4 (10.81%) | 17 (15.18%) | 0.509 |
| Smoking history | 61 | 17 (45.95%) | 44 (39.29%) | 0.477 |
| Occlusive site, n (%) | 0.098 | |||
| MCA | 78 | 15 (40.54%) | 63 (56.25%) | |
| ICA | 71 | 22 (59.46%) | 49 (43.75%) | |
| FVH-ASPECTS, median (IQR) | 2 (1–3) | 0 (0–1) | 3 (1–4) | <0.0001 |
| ASL-collateral circulation, median (IQR) | 2 (1–3) | 3 (2–3) | 1 (1–2) | <0.0001 |
ASL, arterial spin labelling; ASPECTS, Alberta Stroke Program Early Computed Tomography Score; FVH, fluid-attenuated inversion recovery vascular hyperintensity; ICA, internal carotid artery; MCA, middle cerebral artery.