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).