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

Table 4

Predictive ability of AAC grades for SS.

Predictor (AAC grades)	Outcome (SS)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Grade =0	≤22	46.7	95.9	94.1	56.4	67.3
Grade ≥2	>22	66.3	89.2	81.5	78.6	79.6
Grade =3	>22	13.5	98.4	86.0	61.3	62.9
Grade =3	≥33	24.0	97.1	63.4	85.8	84.3

AAC: aortic arch calcification; SS: SYNTAX score; PPV: positive predictive value; NPV: negative predictive value.