Figure 5

Adjusted Relative Risk (RR) of the 5-year overall survival (OS) compared to the HPV⁻/p16⁻ subgroup in patients with oropharyngeal cancer origin. Forest plot of RR among included studies for the 5-year OS of the HPV⁻/p16⁻ subgroup compared to (A) HPV⁻/p16⁺ and (B) HPV⁺/p16⁻. Combined RR was calculated by a random mode.