Calculation of Net Reclassification Improvement (NRI) for the modified RAMA-EGAT score versus the traditional RAMA-EGAT score
| + Significant CAD (N=346) (Cases) | Modified RAMA-EGAT score | ||||
| RAMA-EGAT score | Risk group | Low | Intermediate | High | Cases classified upward = 4+38 (12.14%) |
| Low | 3 | 4 | 6 | Cases classified downward = 4+17 (6.07%); | |
| Intermediate | 4 | 4 | 38 | Cases classified upward-Cases classified downward = 12.14% − 6.07% = 6.07% | |
| High | 0 | 17 | 270 | ||
| − Significant CAD (N=1045) (Non-cases) | Modified RAMA-EGAT score | ||||
| RAMA-EGAT score | Risk group | Low | Intermediate | High | Cases classified upward = 40+121 (15.41%) |
| Low | 106 | 40 | 48 | Cases classified downward = 109+278 (37.03%) | |
| Intermediate | 109 | 81 | 121 | Cases classified downward-Cases classified upward = 37.03% − 15.41% = 21.62% | |
| High | 59 | 278 | 203 | NRI = 6.07% + 21.62% = 27.69% | |