Age at Diagnosis
Site-based mean and median age of diagnosis for each decade is displayed in Table 2. The mean age at diagnosis for primary tumors of the oral cavity was 64.2 years, oropharynx was 61.1 years, larynx was 64.6 years and hypopharynx was 64.5 years. Mean age at diagnosis increased for all subsites except for cancers of the oropharynx. Oropharyngeal cancers exhibit a decrease in the mean age at diagnosis over the last four decades from 61.5 years in 1975-1984 to 61.2 years in 2005-2016 (Table 2). Of the four subsites combined, mean age at diagnosis has increased from 62.8 years to 63.6 years (Table 2).