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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, 27–30] 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