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Table 7 Net reclassification improvement

From: Is pathology necessary to predict mortality among men with prostate-cancer?

Basic model risk levels Extended model risk level
Less than 10% 10-50% More than 50% All
n % n % n % n %
Less than 10% 2603 87.3 378 12.68 0 0 2981 74.54
10-50% 469 47.37 463 46.77 58 5.9 990 24.76
More than 50% 0 0 18 64.3 10 35.7 28 0.7
  1. This table depicts the classification differences between the extended model (with pathology) to the model without pathology. Using a cut-off of less than 10% risk of 5 year prostate-cancer specific mortality. The extended model reclassified 378 of 2981 (12.68%) to a higher risk group (between 10-50% risk). Using a cutoff of more than 50% the extended model moved 18 (64.3.6%) of 28 patients to a lower risk group. Of the 990 patients classified to 10-50% risk the extended model moved 469 (47.37%) to the lower risk group and 58 (5.9%) to the higher risk group.