The incidence of oropharyngeal cancer in Taiwan: an endemic betel quid chewing area.

Background: Oropharyngeal cancer is the one of the most common cancers in the world. The purpose of this study was to examine the trends in oropharyngeal cancer from 1979 to 1996 in Taiwan.

Methods: Traditional cohort analysis was employed to show the birth-cohort effect of oropharyngeal cancer incidence.