Agreement between hand-held ultrasound assessment of the internal carotid artery grading compared with reference
| Degree stenosis by HIGH | Number of vessels, n (%) | Correct classification by HUD, % (95% CI) |
| No plaque | 22 (14) | 73 (52 to 88) |
| Intimal thickening | 29 (18) | 21 (10 to 38) |
| <50% | 97 (61) | 84 (75 to 90) |
| 50%–69% | 5 (3) | 80 (36 to 98) |
| 70%–99% | 4 (2) | 50 (15 to 88) |
| 99% | 2 (1) | 0 (0 to 67) |
| 100% | 1 (1) | 100 (15 to 100) |
The raw agreement of correctly classified stenoses by examinations with hand-held ultrasound devices (HUD) versus reference (HIGH) is shown in percentages by the categories of the stenoses by HIGH.