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Table 4 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% 183 85.5 31 14.5 0 0 214 5.3
10-50% 221 6.4 2992 87.2 219 6.4 3432 85.8
More than 50% 0 0 122 34.6 231 65.4 353 8.8
  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 all cause mortality. The extended model reclassified 31 of 214 (14.5%) to a higher risk group (between 10-50% risk). Using a cutoff of more than 50% the extended model moved 122 (34.6%) of 353 patients to a lower risk group. Of the 3432 patients classified to 10-50% risk the extended model moved 221 (6.4%) to the lower risk group and 219 (6.4%) to the higher risk group.