Table 2.

Univariate and multivariate Cox regression analysis for overall survival intriple‐negative breast cancer patients

Parameter	Univariate analysis			Multivariate analysis
	HR	95% CI	P	HR	95% CI	P
Age (<50 vs ≥50)	0.821	0.483‐1.395	0.465
Clinical stage (I‐II vs III‐IV)	2.392	1.318‐4.343	0.004	2.196	0.740‐6.520	0.157
T classification (T1‐T2 vs T3‐T4)	2.117	1.242‐3.610	0.006	1.468	0.828‐2.604	0.188
N classification (N0‐N1 vs N2‐N3)	1.970	1.133‐3.324	0.016	0.480	0.172‐1.340	0.161
M classification (M0 vs M1)	7.793	3.772‐16.100	<0.001	5.311	2.379‐11.853	<0.001
Family history (No vs Yes)	0.791	0.373‐1.678	0.541
Histological grade (G1 vsG2‐G3)	1.293	0.750‐2.231	0.355
MIR503HG expression (Low vs High)	0.319	0.185‐0.552	<0.001	0.426	0.216‐0.842	0.014

Abbreviations: HR, hazard ratio; 95% CI, 95% confidence interval.