From: Carotid bruits as predictor for carotid stenoses detected by ultrasonography: an observational study
Grade of Carotid US Stenosis | ||||
---|---|---|---|---|
Carotid Bruits (yes/no) | 50–69% | 70–99% | 100% | 50–99% |
Sensitivity | 55% (53/96) | 77% (183/238) | 26% (15/57) | 71% (236/334) |
Specificity | 52% (255/486) | 71% (243/344) | 49% (256/525) | 81% (200/248) |
Accuracy | 53% (308/582) | 73% (426/582) | 47% (271/582) | 75% (436/582) |