|FRS||FRS + Coronary Calcium Score|
|Low (n = 2,410)||89% (92%)||11% (8%)||22% (39%)|
|Intermediate (n = 595)||25% (25%)||53% (35%)|
|High (n = 245)||100% (100%)|
Data adapted from Preis et al. (36).
Coronary calcium score criterion was either the ≥90th percentile value or absolute score ≥100; data using the absolute coronary calcium score is shown in parentheses. Note that in the FRS intermediate group, coronary calcium score reclassified 25% of subjects into a lower risk stratum and 22% to 39% into a higher risk stratum. Eight percent to 11% of those at low risk FRS level were upgraded to intermediate risk level with the addition of coronary calcium score.
FRS = Framingham risk score.