Short-Term Prognostic Index for Breast Cancer: NPI or Lpi

Table 3

Measures of model performance of NPI and Lpi. Significant better performance is indicated in bold.

measure	NPI	Lpi	95% CI for the difference between NPI and Lpi
cindex	0.69	0.66	0.01; 0.04
EvR	0.04	0.04	−0.01; 0.02
EXT%	48.6	59.5	−0.14; −0.08

EvR: difference in event rate in high versus low risk patients
EXT%: percentage of patients classified into the most extreme risk groups
CI: confidence interval.