and socioeconomic status (SES) in Canada, and investigate changes in the relationship
between HNC incidence and SES from 1992 to 2007. Materials and methods Cases were
drawn from the Canadian Cancer Registry (1992–2007), and were categorized into three
subsites: oropharynx, oral cavity, and “other”(hypopharynx, larynx, and nasopharynx).
Demographic and socioeconomic information were extracted from the Canadian Census of …