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

Table 2

Cox univariate analysis of prognostic variables included in the NPI and Lpi, and NPI and Lpi.

Variable	HR	95%  CI	P-value
Size (cm)	1.081	1.028–1.136	.0023
pN
low versus high	0.527	0.453–0.612	<.0001
pN
intermediate versus high	0.630	0.512–0.775	<.0001
Grade
low versus high	0.432	0.350–0.533	<.0001
Grade
intermediate versus high	0.642	0.559–0.737	<.0001
Lymph node ratio	1.427	1.328–1.533	<.0001
Grade
low and intermediate versus high	2.644	2.057–3.398	<.0001

HR: hazard ratio
pN: pathological nodal status