Accuracy of pretest probability assessments for pulmonary embolism
| Assessment types | Pretest categories | Range of pulmonary embolism rates (%) | Range of likelihood ratios |
|---|---|---|---|
| Clinical Gestalt (7 studies) | Low | 8% to 19% | 0.13 to 0.53 |
| Moderate | 26% to 47% | 0.67 to 1.1 | |
| High | 46% to 91% | 1.9 to 12 | |
| Clinical prediction guide (10 studies) | Low | 3% to 28% | 0.05 to 0.93 |
| Moderate | 16% to 46% | 0.72 to 2.0 | |
| High | 38% to 98% | 1.4 to 66 |