TABLE 3.

Multivariate Cox proportional hazard model for LRRFS

Characteristic	All patients			BCT			Mastectomy
	HR	95% CI	P-value	HR	95% CI	P-value	HR	95% CI	P-value
Mastectomy vs. BCT	1.07	0.86 to 1.34	0.55
Age: >50 vs. ≤ 50 years	0.73	0.58 to 0.92	0.007	0.66	0.46 to 0.92	0.016	0.79	0.58 to 1.07	0.13
Tumor size: T2–4 vs. T1	1.37	1.09 to 1.72	0.006	1.35	0.98 to 1.86	0.07	1.39	1 to 1.92	0.048
Lymph nodes: N1–3 vs. N0	1.21	0.96 to 1.53	0.11	1.48	1.05 to 2.07	0.025	1.02	0.73 to 1.42	0.91
Grade: III vs. I/II	1.92	1.28 to 2.89	0.002	1.89	0.99 to 3.63	0.05	1.94	1.15 to 3.27	0.013
LVI: positive vs. negative/unknown	1.93	1.54 to 2.42	<0.0001	2.00	1.43 to 2.79	<0.0001	1.99	1.46 to 2.71	<0.0001
Resection margin: close/positive vs. free	1.89	1.37 to 2.6	<0.0001	2.02	1.32 to 3.1	0.001	1.86	1.14 to 3.03	0.013
Adjuvant chemotherapy: anthracycline or taxane vs. anthracycline + taxane	1.02	0.80 to 1.30	0.88	1.31	0.91 to 1.87	0.14	0.85	0.61 to 1.18	0.32
Adjuvant chemotherapy:other vs. anthracycline + taxane	2.01	1.46 to 2.77	<0.0001	1.72	1.03 to 2.89	0.038	2.24	1.47 to 3.4	0.0002