Table 2:

Overall survival of the patient cohort

	HR (95% CI)	P-Value	Overall P-Value
Group
No Reconstruction	-REF-		<0.001
Reconstruction	0.836 (0.802 – 0.871)	<0.001
Radiation Delay			0.74
No	-REF-
Yes	1.006 (0.971 – 1.043)	0.74
Age (years)	1.019 (1.018 – 1.021)	<0.001	<0.001
Race			<0.001
White	-REF-
Asian	0.751 (0.68 – 0.83)	<0.001
Black	1.225 (1.178 – 1.274)	<0.001
Other	0.958 (0.837 – 1.096)	0.53
Insurance			<0.001
Private	-REF-
Not Insured	1.254 (1.148 – 1.37)	<0.001
Government	1.271 (1.229 – 1.313)	<0.001
Facility Type			<0.001
Integrated Network	-REF-
Academic	0.959 (0.893 – 1.03)	0.25
Comprehensive	1.052 (0.989 – 1.119)	0.11
Community	1.117 (1.04 – 1.2)	0.002
Facility Location			<0.001
West	-REF-
Northeast	1.087 (1.022 – 1.156)	0.008
South	1.138 (1.078 – 1.201)	<0.001
Midwest	1.156 (1.091 – 1.226)	<0.001
Grade			<0.001
1	-REF-
2	1.347 (1.273 – 1.425)	<0.001
3	1.848 (1.743 – 1.961)	<0.001
CDCC Score			<0.001
0	-REF-
1	1.261 (1.216 – 1.307)	<0.001
≥ 2	1.714 (1.601 – 1.835)	<0.001
Clinical N			<0.001
cNX	-REF-
cN0	0.812 (0.766 – 0.86)	<0.001
cN1	0.997 (0.941 – 1.057)	0.93
cN2	1.179 (1.106 – 1.257)	<0.001
cN3	1.534 (1.425 – 1.652)	<0.001
Clinical T			<0.001
cTX	-REF-
cT0	1.022 (0.764 – 1.368)	0.88
cT1	0.74 (0.693 – 0.789)	<0.001
cT2	0.954 (0.901 – 1.01)	0.11
cT3	1.13 (1.061 – 1.204)	<0.001
cT4	1.314 (1.234 – 1.399)	<0.001
ER Status			<0.001
Positive	-REF-
Negative	1.306 (1.257 – 1.357)	<0.001
PR Status			<0.001
Positive	-REF-
Negative	1.373 (1.325 – 1.424)	<0.001
Laterality			<0.001
Unilateral	-REF-
Bilateral	0.897 (0.866 – 0.93)	<0.001
Chemotherapy Type			<0.001
No Chemotherapy	-REF-
Adjuvant Only	0.566 (0.544 – 0.589)	<0.001
Neoadjuvant	0.826 (0.789 – 0.866)	<0.001

^*The model has accounted the correlation of patients treated at same hospital.