Prediction rule test characteristics for 30-day PE-related mortality in 228 patients deemed high risk by the PESI
| Troponin plus TTE parameter (95% CI) | Troponin plus CCUS parameter (95% CI) | TTE plus CCUS parameter (95% CI) | |
| Positive test N, % | 29 (12.7%) | 41 (18.0%) | 51 (10.5%) |
| Sensitivity, % | 27.3 (8.7 to 45.9) | 45.4 (24.6 to 66.3) | 27.3 (8.7 to 45.9) |
| Specificity, % | 88.8 (84.5 to 93.1) | 84.9 (80.1 to 89.8) | 91.3 (87.4 to 95.1) |
| Positive predictive value, % | 20.7 (5.9 to 35.4) | 24.4 (11.2 to 37.5) | 25.0 (7.7 to 42.3) |
| Negative predictive value, % | 92.0 (88.2 to 95.7) | 93.6 (90.1 to 97.1) | 92.2 (88.5 to 95.8) |
| Positive likelihood ratio | 2.44 (1.12 to 5.35) | 3.02 (1.72 to 5.29) | 3.12 (1.38 to 7.03) |
| Negative likelihood ratio | 0.82 (0.63 to 1.06) | 0.64 (0.44 to 0.94) | 0.80 (0.61 to 1.03) |
CCUS, lower extremity complete compression ultrasound; PE, pulmonary embolism; PESI, pulmonary embolism severity index; TTE, transthoracic echocardiography.