Table 5.
Total 30‐Day Rates of Complications in the Validation Population, Stratified by the NSQIP Registry CEA Scale Divisions
| Outcome | Very Low Risk | Low Risk | Medium Risk | High Risk | Very High Risk |
|---|---|---|---|---|---|
| NSQIP registry CEA scale points | 0–5 | 6–8 | 9–12 | 13–16 | ≥17 |
| Overall prevalence, % | 38.9 | 20.1 | 20.6 | 11.9 | 8.5 |
| Prevalence: symptomatic patients, % | 19.9 | 17.3 | 25.7 | 19.6 | 17.6 |
| Prevalence: asymptomatic patients, % | 54.2 | 22.3 | 16.5 | 5.7 | 1.4 |
| Stroke, death, or MI, % | 1.6 | 3.4 | 4.2 | 7.2 | 8.3 |
| Stroke or death, % | 1.0 | 2.5 | 3.2 | 5.8 | 6.9 |
| Death, % | 0.2 | 0.5 | 0.6 | 2.1 | 3.1 |
| Stroke, % | 0.8 | 2.1 | 2.7 | 4.4 | 4.6 |
| MI, % | 0.8 | 1.2 | 1.6 | 2.5 | 2.4 |
| Any complication, % | 6.0 | 9.0 | 11.8 | 15.5 | 22.6 |
| Extended hospitalization, % | 12.8 | 22.0 | 32.9 | 47.9 | 69.3 |
| Nonroutine discharge, % | 1.0 | 2.7 | 6.0 | 14.7 | 32.3 |
| Unplanned readmission, % | 3.2 | 4.8 | 7.2 | 8.8 | 8.7 |
CEA indicates carotid endarterectomy; MI, myocardial infarction; NSQIP, National Surgical Quality Improvement Program.