TABLE 3.
Relationship Between Carotid Plaque Characteristics and Geometric Angles on Both Sides of the Carotid Artery as Determined by Multiple Regression*
| Median (25th, 75th) | 95% CI | |||||||
|---|---|---|---|---|---|---|---|---|
| Left | Right | SD | SE Mean | Lower | Upper | Correlation | P † | |
| Ca volume (mm3) | 0.00 (0.00, 11.78) | 0.00 (0.00, 17.03) | 67.94 | 7.55 | −23.05 | 6.99 | 0.57 | 0.29 |
| LRNC volume (mm3) | 1050 (0.00, 58.77) | 6.28 (0.00, 81.47) | 171.21 | 19.02 | −39.98 | 35.74 | 0.43 | 0.91 |
| IPH volume (mm3) | 0.00 (0.00, 0.00) | 0.00 (0.00, 0.87) | 62.51 | 6.95 | −23.62 | 4.03 | 0.28 | 0.16 |
| ICAA (deg.) | 32.79 (22.86, 41.08) | 31.00 (22.91, 41.73) | 14.98 | 1.83 | −3.08 | 4.23 | 0.36 | 0.76 |
| ECAA (deg.) | 24.53 (16.59, 35.03) | 28.30 (18.49, 35.13) | 14.96 | 1.83 | −2.92 | 4.38 | 0.29 | 0.69 |
| BIFA (deg.) | 58.35 (49.72, 70.53) | 57.80 (46.25, 67.86) | 18.75 | 2.27 | −2.18 | 6.90 | 0.39 | 0.30 |
| Nonplanar ICAA (deg.) | −3.72 (−11.84, 0.84) | −2.64 (−7.62, 1.65) | 12.79 | 1.56 | −5.23 | 1.00 | −0.04 | 0.18 |
| Nonplanar ECAA (deg.) | −0.95 (−4.09, 3.59) | −4.62 (−9.02, −1.06) | 10.59 | 1.29 | 1.62 | 6.78 | 0.23 | 0.002 |
*
Adjusted for sex, age, hypertension, diabetes, smoking, low-density lipoprotein, cholesterol, ICAA, ECAA, BIFA, nonplanar ICAA, and nonplanar ECAA.
†
Because 2 consecutive statistical procedures were performed, a P-value of 0.05/2=0.025 was considered as indicating statistical significance.
BIFA indicates bifurcation angle; Ca, calcification; ECAA, external carotid artery angle; ICAA, internal carotid artery angle; IPH, intraplaque hemorrhage; LRNC, lipid-rich necrotic core.