. Author manuscript; available in PMC: 2015 Mar 22.

Published in final edited form as: Breast Cancer Res Treat. 2011 Aug 27;131(2):561–570. doi: 10.1007/s10549-011-1742-5

Table 5.

Adjusted risk for a second cancer in ipsilateral breast: Competing Risks Cox Proportional Hazard

Variable	HR¹	95% CI²	P-value

Race
African-American vs. White-American	3.96	1.42–11.04	0.01

Final Treatment
Lumpectomy without radiation vs. mastectomy	7.18	1.42 –36.36	0.01
Lumpectomy with radiation vs. mastectomy	4.08	0.85–19.44	0.08

Age at diagnosis	1.03	0.99–1.07	0.14

Margin
Positive vs. negative	0.96	0.44–2.07	0.91

Presentation
Screening mammography vs. palpation/nipple discharge	0.48	0.16–1.40	0.17

Body Mass Index	1.04	0.97–1.11	0.31