Prognostic factors in recurrent or metastatic squamous cell carcinoma of the head and neck

Background In clinical trials of recurrent and metastatic head and neck carcinoma, Argiris et al have identified prognostic factors for overall survival (OS) and progression‐free survival (PFS), weight loss, Eastern Cooperative Oncology Group performance status (ECOG‐PS), tumor primary site, tumor differentiation, prior radiotherapy, deriving a two‐group prognostic classification. This study evaluates Argiris's classification in “field‐practice”...