Table 3 Diagnostic characteristics of the imaging modalities of occult intertrochanteric fracture of the femur (reported with 95% confidence interval)
|  | Plain radiograph (n = 30) | Bone scan (n = 30) | CT (n = 26) | P-value |
|---|---|---|---|---|
Sensitivity | 0.0 (0.0–22.8) | 100.0 (77.2–100.0) | 76.5 (50.1–93.2) | 0.045 |
Specificity | 100.0 (55.5–100.0) | 77.8 (40.0–97.2) | 100.0 (55.5–100.0) | 0.157 |
Accuracy | 30.0 (14.7–49.4) | 93.3 (77.9–99.2) | 84.6 (65.1–95.6) | 0.046 |
PPV | NaN | 91.3 (72.0–98.9) | 100.0 (66.1–100.0) |  |
NPV | 30.0 (14.7–49.4) | 100.0 (47.3–100.0) | 69.2 (38.6–90.9) |  |