Lymph Node Ratio May Predict the Benefit of Postoperative Radiotherapy in Non– Small-Cell Lung Cancer  Damien Urban, MBBS, B Med Sc, Jair Bar, MD, PhD,

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Lymph Node Ratio May Predict the Benefit of Postoperative Radiotherapy in Non– Small-Cell Lung Cancer  Damien Urban, MBBS, B Med Sc, Jair Bar, MD, PhD, Benjamin Solomon, MBBS, PhD, David Ball, MBBS, MD, FRANZCR  Journal of Thoracic Oncology  Volume 8, Issue 7, Pages 940-946 (July 2013) DOI: 10.1097/JTO.0b013e318292c53e Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions

FIGURE 1 Distribution of lymph node ratio within the population. The dashed black lines represent the quartile values. Journal of Thoracic Oncology 2013 8, 940-946DOI: (10.1097/JTO.0b013e318292c53e) Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions

FIGURE 2 Kaplan–Meier survival curves by LNR, stratified by N-stage. A, Overall survival by LNR in N1 disease. B, Overall survival by LNR in N2 disease. Journal of Thoracic Oncology 2013 8, 940-946DOI: (10.1097/JTO.0b013e318292c53e) Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions