Performance of the joint British recommendations risk charts
|
Joint British guidelines: 10 year CHD risk > 30% |
Joint British guidelines: 10 year CHD risk > 15% |
Revised joint British guidelines: 10 year CHD risk > 30% |
Revised joint British guidelines: 10 year CHD risk > 15% | |
| True positives | 41 | 239 | 50 | 260 |
| False positives | 2 | 12 | 8 | 2 |
| True negatives | 630 | 388 | 624 | 398 |
| False negatives | 18 | 52 | 9 | 31 |
| Sensitivity (%) (95% CI) | 69.5 (51.8 to 81.9) | 82.1 (76.6 to 86.7) | 84.7 (71.0 to 93.0) | 89.4 (84.8 to 92.7) |
| Specificity (%) (95% CI) | 99.7 (98.9 to 100) | 97.0 (94.8 to 98.4) | 98.7 (97.5 to 99.5) | 99.5 (98.1 to 99.9) |
| Positive predictive value (%) (95% CI) | 95.3 (83.2 to 99.4) | 95.2 (91.6 to 97.5) | 86.2 (72.9 to 94.1) | 99.2 (97.2 to 99.9) |
| Negative predictive value (%) (95% CI) | 97.2 (95.6 to 98.4) | 88.2 (84.5 to 91.2) | 98.5 (97.3 to 99.4) | 92.7 (89.7 to 95.1) |