Skip to main content
. Author manuscript; available in PMC: 2021 Aug 17.
Published in final edited form as: Breast Cancer Res Treat. 2011 Nov 24;132(1):197–203. doi: 10.1007/s10549-011-1867-6

Table 2.

Event table

First event Mastectomy BCT Hazard ratio BCT/mastectomy (95% CI) P value
Events, # Cumulative incidence at 26 years, % (SE) Events, # Cumulative incidence at 26 years, % (SE)
All breast cancer 50 43.4 (4.9) 70 58.5 (4.8) 1.50 (1.04, 2.16) 0.028
IBTR N/A 0.9 (0.9) 27 21.9 (3.9) N/A N/A
Breast cancer at logcalregional site 5 3.5 (1.7) 28 23.6 (4.0) 6.61 (2.55, 17.14) <0.001
Breast cancer at distant site 30 26.4 (4.2) 35 30.0 (4.3) 1.10 (0.67, 1.79) 0.71
Contralateral breast cancer 15 13.6 (3.5) 11 9.1 (2.8) 0.92 (0.62, 1.36) 0.66
Non-breast cancer 13 13.3 (3.6) 12 10.6 (3.0) 1.08 (0.72, 1.62) 0.71