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Table 3 Results of ROC analysis

From: Can diffusion-weighted imaging predict tumor grade and expression of Ki-67 in breast cancer? A multicenter analysis

Ki-67 expression threshold ADC threshold Sensitivity Specificity AUC Positive predictive value Negative predictive value
≥ 10% 0.951 0.704 0.542 0.644 0.267 0.885
≥ 20% 0.913 0.700 0.494 0.613 0.498 0.696
≥ 30% 0.913 0.639 0.512 0.590 0.712 0.430
≥ 40% 0.821 0.808 0.366 0.576 0.844 0.311
≥ 50% 0.821 0.807 0.413 0.600 0.892 0.263
  1. ADC Apparent diffusion coefficient