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Table 3 Diagnostic validity and statistical data

From: Plaque morphology detected with Duplex ultrasound before carotid angioplasty and stenting (CAS) is not a predictor of carotid artery in-stent restenosis, a case control study

  TPRS Inverse TPRS Echo-genicity Texture Surface
AUC (95%CI) 0.54 0.64 0.46 0.53 0.62
  (0.36-0.72) (0.45-0.83) (0.25-0.67) (0.36-0.70) (0.50-0.74)
Cut-off ≥ 3 ≥ 4 ≥ 3 ≥ 1 ≥ 1
Sensitivity 0.70 0.80 0.20 0.60 0.90
Specificity 0.40 0.42 0.88 0.46 0.34
PPV* 0.06 0.08 0.09 0.06 0.07
PNV* 0.96 0.97 0.95 0.95 0.98
  1. *Positive and negative predictive value given the ISR prevalence of 0.06 in the overall population of CAS-treated individuals of this study.