Table 9

Sensitivity, specificity, PPV, and NPV for probability cut-off points
Method 1 Method 2
Cut-point 1 (MLE) Probability .45 Probability .41
  Sensitivity 52.1 % 18.3 %
  Specificity 74.0 % 96.2 %
  PPV 61.8 % 55.3 %
  NPV 65.7% 81.9 %
Cut-point 2 (Sen. 90%) Probability .33 Probability .13
  Sensitivity 90.9 % 89.8 %
  Specificity 17.6 % 28.0 %
  PPV 47.1 % 20.6 %
  NPV 70.5 % 91.3 %
Cut-point 3 (Sen. 80%) Probability .37 Probability .15
  Sensitivity 80.5 % 78.2 %
  Specificity 37.1 % 45.0 %
  PPV 50.9 % 28.7 %
  NPV 70.2 % 88.8 %
Cut-point 4 (Spc. 80%) Probability .48 Probability .23
  Sensitivity 39.9 % 45.8 %
  Specificity 81.4 % 79.5 %
  PPV 63.4 % 36.7 %
  NPV 62.6 % 85.0 %

Hill et al.

Hill et al. BMC Urology 2013 13:6   doi:10.1186/1471-2490-13-6

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