Table 4. Univariate and multivariable analysis of prognostic factors in IDC patients for 5-year survival.

Variable	Univariate analysis			Multivariable analysis
	HR	P > |z|	95% CI	HR	P > |z|	95% CI
Age (yr)
< 55 vs. ≥ 55	1.371	0.320	0.736–2.553
Pathology typing
I vs. II –III	0.829	0.692	0.327–2.102
Tumor size (cm)
< 2 vs. ≥ 2	1.224	0.614	0.559–2.678
Axillary lymph node
N0 vs. NX	1.060	0.858	0.561–2.001
ER expression
Positive vs. Negative	1.480	0.448	0.538–4.069
PR expression
Positive vs. Negative	1.571	0.361	0.596–4.142
Her-2 expression
Positive vs. Negative	2.805	0.006	1.337–5.885	2.588	0.008	1.277–5.246
Ki-67 expression
High vs. Low	0.455	0.015	0.240–0.859	0.492	0.022	0.269–0.901
Molecular typing
Luminal A vs. Luminal B vs. Her-2 positive vs. Basal-like	1.725	0.019	1.096–2.714	1.314	0.052	0.998–1.730
PRSS3 expression
High vs. Low	0.346	0.007	0.159–0.752	0.372	0.009	0.178–0.781