Table 2.

Multivariate Cox regression analysis showing calpain-9 expression, various pathological variables and their effect upon disease specific survival in patients treated with endocrine therapy (A) and with an intermediate NPI value (B)

A
Multivariate cox regression analysis
	Sig.	Exp(B)	95.0% CI for Exp(B)
			Lower	Upper
Calpain-9 expression	0.013	0.563	0.358	0.885
Tumour size	0.093	1.556	0.929	2.606
Tumour stage	0.005	2.135	1.258	3.624
Tumour grade	0.081	1.683	0.937	3.021
NPI	0.854	0.927	0.413	2.081
PgR status	0.204	0.747	0.476	1.172
HER2 status	0.005	2.172	1.270	3.716
LVI status	0.130	1.396	0.906	2.151
B
Multivariate cox regression analysis
	Sig.	Exp(B)	95.0% CI for Exp(B)
			Lower	Upper
Calpain-9 expression	0.003	0.543	0.360	0.817
PgR status	0.076	0.705	0.480	1.037
LVI status	0.000	2.474	1.682	3.638

Sig is the P value, Exp(B) is the hazard ratio and 95% CI for Exp(B) is the 95% confidence interval. Significant P values are indicated in bold.