Subgroup analyses of non-MAE occurrence
| Number | Non-MAE rate | 95% CI | ||
| Age, years | <70 | 48 | 100.0% | 78.2%ؘ to 100.0% |
| ≥70 | 92 | 97.8% | 91.6% to 99.5% | |
| CEA risk | High | 55 | 98.2% | 87.8% to 99.7% |
| Normal | 85 | 98.8% | 91.9% to 99.8% | |
| Symptom | Symptomatic | 55 | 98.2% | 87.8% to 99.7% |
| Asymptomatic | 85 | 98.8% | 97.9% to 99.8% | |
| Degree of stenosis in symptomatic lesions | <50% | 7 | 85.7% | 33.4% to 97.9% |
| 50%–69% | 15 | 100.0% | 59.0% to 100.0% | |
| ≥70% | 33 | 100.0% | 69.2% to 100.0% |
CEA, carotid endarterectomy; CI, confidence interval; MAE, major adverse event.