Fig. 3
From: EGFR as a biomarker of smoking status and survival in oropharyngeal squamous cell carcinoma
Disease specific survival of p16 positive and negative oropharyngeal cancer patients stratified by smoking and EGFR. Kaplan-Meier analysis of disease specific survival in p16 positive and negative patients is shown with listed 5-year estimates when stratified by a) smoking status defined by 20 pack years and b) total tumor EGFR levels. P-value according to Log-Rank is listed at bottom right of each survival graph