Table 2. Comparing the performance of IVA-based risk stratification using FRS against chronological age and three types of VA technique.

SN	PE metric	CA	VA using FRS	VA using SCORE	VA using cIMTave	IVA
1	Sensitivity	70.93	87.83	70.17	95.97	92.70
2	Specificity	61.74	36.80	54.60	84.18	63.63
3	Accuracy	62.63	41.73	62.63	62.63	66.44
4	PPV	16.52	12.91	14.17	39.54	21.74
5	NPV	95.22	96.67	94.49	99.49	98.77
6	MCC	0.20	0.15	0.15	0.56	0.34
7	AUC	0.66	0.62	0.62	0.90	0.78

All the results are obtained for the 20 trials using K5 protocol. IVA, integrated vascular age; FRS, framingham risk score; PE, performance evaluation; CA, chronological age; VA, vascular age; FRS, framingham risk score.