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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.