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. Author manuscript; available in PMC: 2016 Jan 23.
Published in final edited form as: N Engl J Med. 2015 Jul 23;373(4):307–316. doi: 10.1056/NEJMoa1415340

Figure 2. Disease-free Survival at 10 Years, According to Subgroup.

Figure 2

Shown are hazard ratios and rates of disease-free survival among patients who underwent whole-breast irradiation plus regional nodal irradiation (WBI+RNI) and those who underwent whole-breast irradiation alone (WBI, control group). The dashed vertical line at 0.76 in dicates the overall hazard ratio estimate. Hazard ratios are shown on a logarithmic scale. DFS denotes disease-free survival, ER estrogen receptor, and PR progesterone receptor.