Fig. 2
From: EGFR as a biomarker of smoking status and survival in oropharyngeal squamous cell carcinoma
Disease specific survival in oropharyngeal cancer according to p16, smoking status and EGFR levels. Kaplan-Meier analysis of disease specific survival is shown with listed 5-year estimates when stratified by a p16 status, b smoking above 10 pack years, c smoking above 20 pack years, d total EGFR tumor levels e EGFR levels relative to Ki67 tumor levels and f high EGFR within high or low Ki67 tumor nuclear staining. P-value according to Log-Rank is listed at bottom right of each survival graph