Fig. 3From: Tobacco exposure as a major modifier of oncologic outcomes in human papillomavirus (HPV) associated oropharyngeal squamous cell carcinomaCompeting risks models for causes of death in subpopulations stratified by human papillomavirus (HPV) and tobacco exposure: (a) HPV- & pack-years (PY) ≤30; (b) HPV- & PY > 30; (c) HPV+ & PY ≤30; and (d) HPV+ & PY > 30. Lines are curves fitting all cause death events (black), cancer-specific death events (red) and non-cancer death events (blue)Back to article page