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Table 1 Diagnostic performance of ultrasound performed by emergency physicians in the evaluation of suspected acute appendicitis

From: Overview of point-of-care abdominal ultrasound in emergency and critical care

Author Sample size Prevalence (%) Sensitivity (%) Specificity (%) PPV (%) NPV (%)
Chen et al. [25] 147 75 96 68 90 86
Fox et al. [26] 155 45 39 90 75 65
Fox et al. [27] 126 45 65 90 84 76
Elikashvili et al. [28] 150 33 60 94 86 82
Sivitz et al. [29] 264 32 85 93 85 93
Mallin et al. [30] 97 35 68 98 96 85
  1. Four studies [25, 2730] were performed prospectively. The final diagnosis of appendicitis was made according to operative or pathology findings
  2. PPV positive predictive value, NPV negative predictive value