Univariate analyses of characteristics of stenosis hypothesized to be associated with stent failure, and any stroke and death within 30 days
| Characteristics of Stenosis | Stent Failure-No. (%) | P | 30-Day Stroke and Death-No. (%) | P |
|---|---|---|---|---|
| Stenosis: >70% (n = 25), | 2 (8.0) | NS | 2 (8.0) | NS |
| 50%–69% (n = 23) | 2 (8.7) | 1 (4.3) | ||
| Length: >10 mm (n = 12), | 3 (25.0) | .043 | 1 (8.3) | NS |
| <10 mm (n = 36) | 1 (2.8) | 2 (5.6) | ||
| Access tortuosity: severe (n = 17), | 4 (23.5) | .012 | 1 (5.9) | NS |
| Mild (n = 12)/moderate (n = 19) | 0 (0) | 2 (6.5) | ||
| Bifurcation lesion: | 2 (8.7) | NS | 1 (4.3) | NS |
| Yes (n = 23) | ||||
| No ( n= 25) | 2 (8.0) | 2 (8.0) | ||
| Site: anterior circulation (n = 28) | 2 (7.1) | NS | 2 (7.1) | NS |
| MCA (n = 20) | 2 | 2 | ||
| ICA (n = 8) | 0 | 0 | ||
| Posterior circulation (n = 20) | 2 (10.0) | 1 (5.0) | ||
| BA (n = 11) | 0 | 1 | ||
| VA (n = 9) | 2 | 0 |
Note:—BA indicates basilar artery; MCA, middle cerebral artery; ICA, intracranial internal carotid artery; VA, intracranial vertebral artery; NS, no significance.