Table 3 Clinically relevant fractures seen on radiography compared to point-of-care bedside ultrasound and sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the sonographers and expert in significant fractures
Sonographer | Expert | |||
|---|---|---|---|---|
Fracture | No Fracture | Fracture | No Fracture | |
Fracture Xray | 28 (80%) | 7 (20%) | 29 (83%) | 6 (17%) |
No fracture Xray | 12 (10%) | 111 (90%) | 1 (1%) | 122 (99%) |
Sensitivity | 80.0% (95% CI 63.0–91.6%) | 82.8% (95% CI 66.3–93.4%) | ||
Specificity | 90.3% (95% CI 83.7–94.9%) | 99.2% (95% CI 95.5–99.9%) | ||
PPV | 70.0% (95% CI 57.0–80.3%) | 96.7% (95% CI 80.3–99.5%) | ||
NPV | 94.1% (95% CI 89.1–96.9%) | 95.3% (95% CI 91.0–98.2%) | ||