Aortic Arch Calcification Is a Strong Predictor of the Severity of Coronary Artery Disease in Patients with Acute Coronary Syndrome

Figure 2

Distribution of SS across the AAC grades. Polynomial testing revealed a linear trend between SS and AAC grades (P < 0.001). There was a significant difference in SS among all four AAC grades: AAC grade 0 versus grade 1 (P < 0.001), 2 (P < 0.001), or 3 (P < 0.001); grade 1 versus grade 2 (P < 0.001) or 3 (P < 0.001); and grade 2 versus grade 3 (P < 0.001). Hollow circles indicate mean values. SS: SYNTAX score; AAC: aortic arch calcification.