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. 2019 Jan 31;111(9):933–942. doi: 10.1093/jnci/djy224

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Figure 6. — Cox multiple regression analysis of progression-free survival and relapse-free survival in the oropharyngeal squamous carcinoma chemoradiation (OPSC-CR) cohort. Hazard ratios (HR), 95% confidence intervals (CI), and Wald test P values for progression-free survival (n = 208) (A, C) and relapse-free survival (n = 194), (B, D) for a two-variable model including estrogen receptor alpha (ERα) and human papillomavirus (HPV) status as predictors (A, B), and for a model adjusted for additional clinical variables (C, D).