Fig. 5
From: Findings from a Malaysian multicentre study on oropharyngeal squamous cell carcinoma
Kaplan Meier estimates of overall survival stratified according to ethnicity of patients. a There was no statistically significant difference in overall survival for patients with HPV-associated OPSCC of different ethnic groups (Log-rank test, pooled over strata; p = 0.234; n = 57); b Patients stratified according to ethnicity of patients. There was statistically significant difference in overall survival for patients with HPV-independent OPSCC of different ethnic groups, with patients of Malay ethnicity having poorer overall survival when compared to patients of other ethnicity (Log-rank test, pooled over strata; p = 0.028; n = 127)