Table 5 Examples of how to use the coronary artery calcium score to refine risk estimates.
Clinical scenario | Pre-test 10-year CHD risk estimate* | CAC score category | Proportion of CAC scores falling within the given category† | Post-test 10-year risk estimate for each CAC score category‡ | |
|---|---|---|---|---|---|
Conservative§ | Optimistic§ | ||||
60-year-old woman with hypertension and high cholesterol | 15% | 0: | 0.47 | 9% | 6% |
1–100: | 0.36 | 15% | 13% | ||
101–400: | 0.12 | 25% | 31% | ||
>400: | 0.05 | 34% | 51% | ||
50-year-old man without other CHD risk factors | 6% | 0: | 0.59 | 4% | 3% |
1–100: | 0.31 | 7% | 6% | ||
101–400: | 0.07 | 11% | 15% | ||
>400: | 0.03 | 16% | 27% | ||
40-year-old woman who smokes | 3% | 0: | 0.89 | 2% | 2% |
1–100: | 0.10 | 4% | 5% | ||
101–400: | 0.01 | 7% | 12% | ||
>400: | 0.00 | 10% | 22% | ||
80-year-old man with high cholesterol | 26% | 0: | 0.05 | 9% | 5% |
1–100: | 0.25 | 15% | 10% | ||
101–400: | 0.30 | 26% | 23% | ||
>400: | 0.40 | 35% | 39% | ||