Table 2.

Multivariate Cox proportional hazards analysis for the prediction of breast cancer patient survival (GSE39004)

Variable	Survival
	HR (95% CI)	p value
Risk score (high vs. low)	3.23 (1.37–7.60)	0.00721
Age (over vs. under 55)	2.29 (0.938–5.57)	0.0688
ER (positive vs. negative)	0.413 (0.158–1.08)	0.0703
Stage (I, II vs. III, IV)	2.03 (0.840–4.93)	0.115
Triple negative or basal-like (yes vs. no)	1.05 (0.341–3.26)	0.927

HR hazard ratio, CI confidence interval