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Table 3 Diagnostic efficacy of the developed radiomic nomogram in assessment of high Ki67 expression of gastrointestinal stromal tumors

From: Personalized CT-based radiomics nomogram preoperative predicting Ki-67 expression in gastrointestinal stromal tumors: a multicenter development and validation cohort

  Development cohort (%) Internal validation cohort (%) External validation cohort (%)
Accuracy 75.00 68.29 73.33
Sensitivity 75.00 83.33 58.82
Specificity 75.00 62.07 77.59
PPV 59.02 90.00 86.54
NPV 86.21 52.38 56.52
  1. PPV positive predictive value, NPV negative predictive value