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Table 2 Diagnostic performance of ultrasound performed by emergency clinicians in the evaluation of suspected ureterolithiasis

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

Author Sample size Prevalence (%) Sensitivity (%) Specificity (%) PPV (%) NPV (%)
Gaspari et al. [39] 104 51 87 82 84 86
Watkins et al. [40] 57 68 80 83 91 65
Moak et al. [41] 107 36 76 78 66 86
Herbst et al. [42] 670 47 73 73 71 75
  1. PPV positive predictive value, NPV negative predictive value