Characteristic | Exertional chest pain* and pathologic ST-T segment** | Exertional chest pain and angina diagnosis according to patient’s opinion†| Exertional chest pain and pathologic ST-T segment and angina diagnosis according to patient’s opinion |
---|---|---|---|
(95% CI) | (95% CI) | (95% CI) | |
Number of patients with characteristic | 26 | 74 | 15 |
Sensitivity | 37.1% (26.8-48.9) | 58.3% (49.6-66.5) | 28.3% (18.0-41.6) |
Specificity | 92.5% (89.3-94.8) | 78.5% (74.2-82.2) | 96.6% (93.9-98.1) |
Positive predictive value | 59.9% (48.2-70.5) | 45.0% (39.2-50.9) | 71.5% (54.8-83.9) |
Negative predictive value | 83.0% (80.2-85.4) | 86.2% (83.4-88.5) | 81.7% (79.0-84.1) |
Likelihood ratio for positive test | 4.9 (3.1-7.9) | 2.7 (2.1-3.4) | 8.3 (4.0-18.0) |
Likelihood ratio for negative test | 0.7 (0.6-0.8) | 0.5 (0.4-0.7) | 0.7 (0.6-0.9) |
Pre-test probability of having a positive/non-conclusive exercise test | 23.2% | 23.2% | 23.2% |
Net gain after positive result | 36.7% (25.0-47.3) | 21.8% (16.0-27.7) | 48.3% (31.6-60.7) |
Number of patients with characteristic per positive/non-conclusive exercise test | 1.7 | 2.2 | 1.4 |