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The Use of Hormone Therapy Alone Versus Hormone Therapy and Radiation Therapy for Breast Cancer in Elderly Women: A Population-Based Study Alan M. Nichol, MD, Elisa K. Chan, MD, Sarah Lucas, MD, Sally L. Smith, MD, Lovedeep Gondara, PDC, Caroline Speers, BA, Scott Tyldesley, MD, MSc International Journal of Radiation Oncology • Biology • Physics Volume 98, Issue 4, Pages (July 2017) DOI: /j.ijrobp Copyright © 2017 Elsevier Inc. Terms and Conditions
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Fig. 1 Survival outcomes by treatment group: locoregional relapse–free survival (A) and breast cancer–specific survival (B). Abbreviations: ET = hormone therapy; ET + RT = hormone therapy and radiation therapy. International Journal of Radiation Oncology • Biology • Physics , DOI: ( /j.ijrobp ) Copyright © 2017 Elsevier Inc. Terms and Conditions
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Fig. 2 Significant predictors of overall survival: Charlson comorbidity score of 0 versus 1 versus ≥2 (A) and age of 70 to 74 years versus 75 to 79 years (B). International Journal of Radiation Oncology • Biology • Physics , DOI: ( /j.ijrobp ) Copyright © 2017 Elsevier Inc. Terms and Conditions
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Fig. 3 Significant predictors of event-free survival: histologic grade (A), lymphovascular invasion (LVI) (B), and treatment group (C). Abbreviations: ET = hormone therapy; ET + RT = hormone therapy and radiation therapy. International Journal of Radiation Oncology • Biology • Physics , DOI: ( /j.ijrobp ) Copyright © 2017 Elsevier Inc. Terms and Conditions
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Fig. 4 Hormone therapy adherence by treatment group (A) and survival outcomes by adherence: locoregional relapse–free survival (B) and breast cancer–specific survival (C). Abbreviations: ET = hormone therapy; ET + RT = hormone therapy and radiation therapy. International Journal of Radiation Oncology • Biology • Physics , DOI: ( /j.ijrobp ) Copyright © 2017 Elsevier Inc. Terms and Conditions
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