Additional file 3: of Optimal cutoff of pretreatment neutrophil-to-lymphocyte ratio in head and neck cancer patients: a meta-analysis and validation study

Figure S1. Prognostic significance of NLR value on progression-free survival (PFS) in HNSCC patients (The first author name of published article, Publication year). (A) Forest plot, (B) Funnel plot. Numbers indicated the hazard ratios (HR) of survival outcomes with [95% confidence interval]. HR > 1 indicated worse outcome for the group having NLR above cutoffs compared to the group having NLR below cutoffs. RE model: Random effect model. (TIF 2385 kb