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Table 3 Sensitivity, specificity, PPV, NPV and the accuracy and point-of-care ultrasound in the diagnosis of blunt chest injuries

From: Value of point-of-care ultrasonography compared with computed tomography scan in detecting potential life-threatening conditions in blunt chest trauma patients

Type of injury Diagnostic tool Analysis Point estimate 95% CIa
Pneumothorax Sonography Sensitivity,  % 75.0 55.1–89.0
Specificity,  % 100 97.2–100
PPV% 100 83.9–100
NPV% 94.9 89.7–97.9
Accuracy% 95.5 91.0–98.2
Hemothorax Sensitivity,  % 45.4 24.4–67.8
Specificity,  % 100 97.3–100
PPV% 100 69.2–100
NPV% 91.8 86.2–95.7
Accuracy% 92.4 87.0–96.0
Contusion Sensitivity,  % 58.1 42.1–73.3
Specificity,  % 100 96.8–100
PPV% 100 86.3–100
NPV% 86.3 79.3–91.7
Accuracy% 88.5 82.5–93.1
Pneumothorax, hemothorax and contusion Physical exam and sonography Sensitivity, % 91.5 81.3–97.2
Specificity, % 90.8 83.3–95.7
PPV 85.7 74.6–93.3
NPV 94.7 88.0–98.3
Accuracy 91.8 85.5–95.0
  1. aBinomial exact calculation