Test characteristics of abdominal palpation for detecting abdominal aortic aneurysm*
| Patient group | Sensitivity (95% CI) | Specificity (CI) | +LR | −LR |
|---|---|---|---|---|
| *LRs defined in glossary. | ||||
| All examinations | 68% (60 to 76) | 75% (68 to 82) | 2.7 | 0.43 |
| Girth <100 cm | 91% | 64% | 2.5 | 0.14 |
| Girth ≥100 cm | 53% | 83% | 3.2 | 0.56 |
| Abdomen not obese | 89% | 66% | 2.6 | 0.17 |
| Abdomen obese | 46% | 84% | 2.9 | 0.64 |
| Abdomen not tight | 74% | 68% | 2.3 | 0.38 |
| Abdomen tight | 52% | 89% | 4.7 | 0.54 |
| Aorta palpable | 88% | 56% | 2.0 | 0.22 |
| Girth ≥100 cm and aorta palpable | 82% | 59% | 2.0 | 0.30 |