Figure 1

The HR and 95% CI of potential prognostic factors for OS of OTSCC patients based on the results of univariate (a) and multivariate (b) Cox regression analyses. TNM, tumor/node/metastasis; TP, total protein; IgG, immunoglobulin G; BF, factor B; RBC, red blood cell count; HR, hazard ratio; 95% CI, 95% confidence interval; OS, overall survival.