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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Ann Surg Oncol. 2015 Jul 28;22(10):3273–3281. doi: 10.1245/s10434-015-4740-8

Fig 1.

Fig 1

Proportion recurrence-free, by year of surgery, (a) for 6 treatment periods, (b) for 2 treatment periods, (c) for breast-conserving surgery alone over 2 treatment periods, (d) for breast-conserving surgery with radiation over 2 treatment periods.

†p-value for difference compared to 1978–1990

‡p-value for difference compared to 1978–1998

HR, hazard ratio