Article Figures & Data
Figures
- Fig 1.
Examples of LA. A, Grade 0. B, Grade 1. C, Grade 2. D, Grade 4.
- Fig 2.
MDCTA axial image of a 79-year-old man. A, The white arrow indicates the right common carotid artery. B, A 200% magnification is shown, and the 3 measurements at 6, 9, and 12 o‘ clock positions are visible.
- Fig 3.
A, Box-and-whisker plot representing CAWT values according LA severity. B, Box-and-whisker plot representing age value according to LA severity.
- Fig 4.
ROC curve analysis.
- Fig 5.
Bland-Altman plot analysis for the CAWT reproducibility between observers.
Tables
Characteristic Patients PValue With LA (n = 76) Without LA (n= 22) Age (yr) 75.5 ± 5.9 72.2 ± 6.4 .0027b Symptoms 45 (59) 9 (41) .1286 Sex (male) 53 (70) 12 (55) .1843 Coronary artery disease 40 (53) 8 (36) .1789 Tobacco use 36 (47) 9 (41) .5924 Hypertension 61 (80) 15 (77) .7592 Diabetes 27 (36) 2 (9) .0167b Dyslipidemia 50 (65) 10 (45) .0847 a Values in parentheses are percentages.
b P < .05.
Variable Coefficient SE PValue OR 95% CI Age 0.0803 0.0313 .0103a 1.0836 1.0192–1.1521 CAD −0.6227 0.4307 .1482 0.5365 0.2307–1.2478 CAWT 0.0811 0.0309 .0087a 1.0845 1.0207–1.1523 Carotid stenosis 0.2914 0.2012 .1175 0.7472 0.5038–1.1084 Diabetes −0.4957 0.4635 .2848 0.6091 0.2456–1.5108 Dislipidemia 0.3981 0.424 .3478 1.4889 0.6486–3.4181 Tobacco 0.4354 0.423 .3033 1.5456 0.6746–3.5411 Hypertension 0.5701 0.5076 .2614 1.7684 0.6539–4.7824 Sex (male) 0.3845 0.4254 .3661 1.4689 0.6381–3.3812 Mixed plaque 0.2273 0.4683 .6274 1.2552 0.5013–3.1427 Fatty plaque 1.1997 0.5447 .0276a 3.3192 1.1411–9.6542 Calcified plaque 0.4186 0.4134 .3113 1.5199 0.6759–3.4175 Constant −8.1382 a P < .05.
Criterion Sensitivity 95% CI Specificity 95% CI +LR −LR ≥0.5 100.00 97.6–100.0 0.00 0.0–8.3 1.00 <0.5 98.03 94.3–99.6 4.65 0.7–15.8 1.03 0.42 <0.6 94.08 89.1–97.3 20.93 10.1–36.0 1.19 0.28 <0.7 85.53 78.9–90.7 46.51 31.2–62.3 1.60 0.31 <0.8 73.68 65.9–80.5 58.14 42.1–73.0 1.76 0.45 <0.9a 62.80a 54.3–70.2a 72.09a 56.3–84.7a 2.24a 0.52a <1.0 49.34 41.1–57.6 79.07 64.0–89.9 2.36 0.64 <1.1 35.53 27.9–43.7 86.05 72.1–94.7 2.55 0.75 <1.2 22.37 16.0–29.8 93.02 80.9–98.5 3.21 0.83 <1.3 7.24 3.7–12.6 97.67 87.7–99.6 3.11 0.95 <1.4 6.58 3.2–11.8 100.00 91.7–100.0 0.93 <1.5 0.00 0.0–2.4 100.00 91.7–100.0 1.00 a selected threshold.
