Table 3.

The prognostic factors for BCSS in our TN-MBC

Variables	Univariate analysis		P	Multivariate analysis		P
	HR	95% CI		HR	95% CI
Age (median, range)	1.013	1.003-1.023	0.012	1.022	1.010-1.034	<0.001
Race/ethnicity (n, %)
Black	1	[reference]		1	[reference]
White	0.712	0.508-0.997	0.048	0.721	0.506-1.028	0.070
Other	0.784	0.436-1.412	0.418	0.742	0.407-1.353	0.330
Insurance (n, %)
No	1	[reference]		1	[reference]
Yes	0.728	0.523-1.014	0.061	0.776	0.550-1.096	0.150
Marital state (n, %)
Unmarried	1	[reference]		1	[reference]
Married	0.701	0.521-0.945	0.020	0.843	0.617-1.153	0.286
Grade (n, %)
Undifferentiated	1	[reference]		1	[reference]
Poorly differentiated	0.616	0.325-1.169	0.139	0.623	0.324-1.198	0.156
Moderately differentiated	0.345	0.153-0.777	0.010	0.406	0.178-0.922	0.031
Well differentiated	0.453	0.179-1.149	0.096	0.991	0.378-2.599	0.985
Unknown	0.862	0.427-1.741	0.687	0.690	0.336-1.420	0.314
TNM stage (n, %)
I	1	[reference]		1	[reference]
II	2.186	1.320-3.619	0.002	1.704	1.003-2.894	0.049
III	7.621	4.495-12.920	<0.001	4.636	2.570-8.363	<0.001
IV	29.625	16.987-51.668	<0.001	20.267	11.096-37.016	<0.001
Chemotherapy (n, %)
No	1	[reference]		1	[reference]
Yes	0.996	0.728-1.282	0.812	0.984	0.710-1.365	0.924
Radiotherapy (n, %)
No	1	[reference]		1	[reference]
Yes	0.675	0.513-0.887	0.005	1.003	0.734-1.372	0.983
Surgery mode (n, %)
BCS	1	[reference]		1	[reference]
TM	2.125	1.422-3.175	<0.001	1.747	1.138-2.683	0.011
Radical mastectomy	4.753	3.274-6.898	<0.001	2.803	1.837-4.277	<0.001
No surgery	9.979	6.100-16.326	<0.001	5.991	3.384-10.606	<0.001

Abbreviations: MBC = metaplastic breast cancer; BCS = breast conserving surgery; TM = total mastectomy.