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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.