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Table 2 Test characteristics for the ultrasound measured inferior vena cava to aorta ratio diameter, the ultrasound measured inferior vena cava inspiratory collapse, and physician gestalt

From: The BUDDY (Bedside Ultrasound to Detect Dehydration in Youth) study

Technique (cut point) AUC (95%CI) SN (%) SP (%) LR+ LR−
IVC/Ao US (0.8) 0.72 (0.53, 0.91) 67 71 2.32 0.47
Inspiratory collapse of IVC US (80%) 0.58 (0.44, 0.72) 83 42 1.43 0.40
Physician gestalt (≥5) 0.61 (0.44, 0.78) 42 65 1.20 0.89
  1. AUC, area under the receiver operating characteristic curve; SN, sensitivity; SP, specificity; LR+, likelihood ratio positive; LR−, likelihood ratio negative; IVC/Ao, inferior vena cava to aorta ratio; IVC, inferior vena cava; US, ultrasound.