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Table 1 Sensitivity, specificity, positive and negative predictive values

From: Feasibility and accuracy of point-of-care pocket-size ultrasonography performed by medical students

Pathology to detect N Pathology (N total) Sensitivity % (95% CI) Specificity % (95% CI) PPV % (95% CI) NPV % (95% CI)
All cardiovascular 156 (468) 95.5 (90.9-97.9) 92.4 (83.7-96.9) 87.0 (75.3-93.4) 97.6 (95.0-98.8)
Cardiac only 115 (338) 98.3 (93.9-100) * 90.8 (78.8-96.7) 84.5 (62.6-95.6) 99.0 (96.4-99.9) *
IVC 20 (71) 84.5 (57.2-96.3) 100 (93.0-100) * 100 (80.5-100)* 94.8 (82.9-98.7)
Lungs 21 (59) 90.5 (68.8-97.6) 94.7 (82.2-99.4)* 90.5 (69.6-98.6) * 94.7 (82.2-99.2)*
All abdominal 104 (453) 92.6 (83–97.1) 92.2 (82.9-96.9) 80.1 (63.3-91.0) 97.5 (92.6-99.2)
AA 12 (74) 91.7 (61.5-98.6)* 100 (94.2-100)* 100 (71.3-100)* 98.4 (91.5-99.6)*
Renal system 48 (282) 89.9 (77.2-95.9) 93.3 (82.5-98.0) 73.1 (48.4-89.6) 97.5 (85.7-99.7)
Gallbladder 35 (84) 94.3 (80.8-99.1)* 85.6 (71.5-93.4) 82.4 (63.7-93.1) 95.5 (84.5-99.3*
Abdominal free fluid 9 (14) 100 (66.2-100)* 100 (48.0-100)* 100 (66.2-100)* 100 (48.0-100)*
  1. N; number, CI; confidence interval, PPV positive predictive value, NPV; negative predictive value, IVC; inferior vena cava, AA; abdominal Aorta. * Clopper-Pearson CI.